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Class Information
Number: 340/327
Name: Communications: electrical > Systems > Plural (e.g., concurrent auxiliary) single indications (e.g., light flashes when bell rings) > With sounder signal cut-off
Description: Subject matter provided with means to cut off a sound signal.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 6998961 |
Alarm clock with voice message input |
Feb. 14, 2006 |
| 5477205 |
Combination outside light and audible/visual alarm |
Dec. 19, 1995 |
| 4959636 |
Search head for metal detectors |
Sep. 25, 1990 |
| 4518946 |
Audio-visual alarm device with translucent cover |
May. 21, 1985 |
| 4462030 |
Electronic apparatus with audible annunciator and alarm lamp |
Jul. 24, 1984 |
| 4255747 |
Sump pump level warning device |
Mar. 10, 1981 |
| 4253083 |
Traffic signal system for blind people |
Feb. 24, 1981 |
| 4241332 |
Personal security alarm |
Dec. 23, 1980 |
| 4225853 |
Controller for signalling system |
Sep. 30, 1980 |
| 4225852 |
Patient care timer |
Sep. 30, 1980 |
| 4100537 |
Monitor for gas piping system |
Jul. 11, 1978 |
| 3984825 |
Condition monitoring apparatus |
Oct. 5, 1976 |
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