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Class Information
Number: 73/386
Name: Measuring and testing > Barometer (e.g., altimeter) > Aneroid
Description: Barometers in which the pressure responsive element is in the form of an exhausted container having a wall or portion thereof movable with pressure changes.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7424825 |
Barometric altimeter including a temperature compensation device |
Sep. 16, 2008 |
| 6430479 |
Methods, apparatus and computer program products for determining the vertical speed of an aircraft |
Aug. 6, 2002 |
| 5638059 |
Audible altimeter for parachutists |
Jun. 10, 1997 |
| 5532698 |
Transponder squawk calibration |
Jul. 2, 1996 |
| 5423215 |
Self-contained heads-up visual altimeter for skydiving |
Jun. 13, 1995 |
| 4953404 |
Mechanism for an aneroid barometer |
Sep. 4, 1990 |
| 4938062 |
Barometric meter |
Jul. 3, 1990 |
| 4694694 |
Solid state accumulating altimeter |
Sep. 22, 1987 |
| 4674106 |
Mechanical counter having a digital display |
Jun. 16, 1987 |
| 4667514 |
Parameter sensors and monitors |
May. 26, 1987 |
| 4665747 |
Flight instrument using light interference for pressure sensing |
May. 19, 1987 |
| 4543824 |
Barometer |
Oct. 1, 1985 |
| 4480479 |
Tonometer |
Nov. 6, 1984 |
| 4361048 |
Pointer instrument movement |
Nov. 30, 1982 |
| 4327583 |
Weather forecasting device |
May. 4, 1982 |
| 4327585 |
Refractometer |
May. 4, 1982 |
| 4255970 |
Barometer mechanism |
Mar. 17, 1981 |
| 4253335 |
Barometric altimeter |
Mar. 3, 1981 |
| 4245508 |
Pressure indicator |
Jan. 20, 1981 |
| 4238958 |
Barometer |
Dec. 16, 1980 |
| 4154110 |
Housing assembly for barometer or other instrument having a settable index |
May. 15, 1979 |
| 4117724 |
Ambient pressure sensor |
Oct. 3, 1978 |
| 4106342 |
Pressure measuring apparatus |
Aug. 15, 1978 |
| 4054058 |
Device for indicating direction of barometric pressure trends |
Oct. 18, 1977 |
| 4052597 |
Constant torque multiple drum counter |
Oct. 4, 1977 |
| 4000652 |
Method and device for measuring the correction factor |
Jan. 4, 1977 |
| 3977250 |
Encoding altimeter |
Aug. 31, 1976 |
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