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Class Information
Number: 968/823
Name: Horology > Apparatus for producing preselected time intervals for use as timing standards (generating clock signals for electric digital computers g06f 1/04; regulating frequency in general h03c, l) [g04f 5/00] > Using oscillators with electromechanical resonators (producing electric oscillations or timing pulses [g04f 5/04] > Using piezoelectric resonators [g04f 5/06]
Description:
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 4779248 |
Electronic timepiece |
Oct. 18, 1988 |
| 4761771 |
Electronic timekeeping apparatus with temperature compensation and method for compensating same |
Aug. 2, 1988 |
| 4760351 |
Multiple oscillator device having plural quartz resonators in a common quartz substrate |
Jul. 26, 1988 |
| 4737944 |
Electronic timepiece |
Apr. 12, 1988 |
| 4730286 |
Circuit and method for correcting the rate of an electronic timepiece |
Mar. 8, 1988 |
| 4618837 |
Low-power consumption reference pulse generator |
Oct. 21, 1986 |
| 4615625 |
Analog electronic timepiece |
Oct. 7, 1986 |
| 4537515 |
Resonator temperature compensated time base and watch using said time base |
Aug. 27, 1985 |
| 4502790 |
Electronic timepiece |
Mar. 5, 1985 |
| RE31749 |
Class B FET amplifier circuit |
Nov. 27, 1984 |
| 4473303 |
Electronic timepiece |
Sep. 25, 1984 |
| 4470024 |
Integrated circuit for a controllable frequency oscillator |
Sep. 4, 1984 |
| 4465379 |
Temperature detector circuit for timepiece |
Aug. 14, 1984 |
| 4453834 |
Electronic timepiece with temperature compensation |
Jun. 12, 1984 |
| 4448543 |
Time-of-day clock having a temperature compensated low power frequency source |
May. 15, 1984 |
| 4443116 |
Electronic timepiece |
Apr. 17, 1984 |
| 4427952 |
Oscillator circuit with digital temperature compensation |
Jan. 24, 1984 |
| 4415870 |
Oscillator circuit with digital temperature compensation |
Nov. 15, 1983 |
| RE31402 |
Electronic timepiece |
Oct. 4, 1983 |
| 4405906 |
Low power consumption C-MOS oscillator |
Sep. 20, 1983 |
| 4398833 |
Electronic timepiece |
Aug. 16, 1983 |
| 4387350 |
Watch circuit with oscillator gain control |
Jun. 7, 1983 |
| 4376919 |
Circuitry for switching effective electrode area on a crystal in a crystal oscillator to vary the oscillation frequency |
Mar. 15, 1983 |
| 4370067 |
Electronic timepiece with gain/loss adjustment |
Jan. 25, 1983 |
| 4358839 |
Absolute digital clock system |
Nov. 9, 1982 |
| 4350961 |
Electronic timepiece |
Sep. 21, 1982 |
| 4346350 |
FET Quartz oscillators |
Aug. 24, 1982 |
| 4345221 |
Temperature compensated signal generator including two crystal oscillators |
Aug. 17, 1982 |
| 4328571 |
Rapid start oscillator latch |
May. 4, 1982 |
| 4322694 |
Crystal oscillator implemented with CMOS technology |
Mar. 30, 1982 |
| 4321698 |
Temperature compensated quartz wristwatch with memory stored predetermined temperature compensating data |
Mar. 23, 1982 |
| 4309665 |
Complementary amplifier circuit |
Jan. 5, 1982 |
| 4296490 |
Crystal oscillation-type electronic timepiece |
Oct. 20, 1981 |
| 4280175 |
Alternating to direct voltage converter |
Jul. 21, 1981 |
| 4264967 |
Unit time producing system |
Apr. 28, 1981 |
| 4255723 |
Amplitude control inverter circuit for electronic device |
Mar. 10, 1981 |
| 4242611 |
Methods and apparatus for providing ultra-stable frequency standards and clocks |
Dec. 30, 1980 |
| 4223524 |
Quartz oscillation circuit for electronic timepieces |
Sep. 23, 1980 |
| 4218661 |
C-MOS crystal oscillator including circuit for temporarily increasing closed loop gain |
Aug. 19, 1980 |
| 4215322 |
High frequency oscillating circuit using AT cut quartz crystal vibrator |
Jul. 29, 1980 |
| 4211985 |
Crystal oscillator using a class B complementary MIS amplifier |
Jul. 8, 1980 |
| 4196404 |
Crystal oscillator having low power consumption |
Apr. 1, 1980 |
| 4179671 |
Capacitor switching circuits for adjusting crystal oscillator frequency |
Dec. 18, 1979 |
| 4159622 |
Electronic timepiece having a main oscillator circuitry and secondary oscillator circuitry |
Jul. 3, 1979 |
| 4148184 |
Electronic timepiece utilizing main oscillator circuit and secondary oscillator circuit |
Apr. 10, 1979 |
| 4141209 |
Crystal controlled oscillator and method of tuning same |
Feb. 27, 1979 |
| 4131864 |
Low voltage compensator for power supply in a complementary MOS transistor crystal oscillator circuit |
Dec. 26, 1978 |
| 4117421 |
Crystal oscillator with reduced power consumption |
Sep. 26, 1978 |
| 4112670 |
Electronic timepiece |
Sep. 12, 1978 |
| 4110640 |
Standard signal generating apparatus |
Aug. 29, 1978 |
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