Patent US3112644A successfully refreshed from Google Patents.
US3112644A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Integrated flight instrument system
Assignee: Kollsman Instrument Corp
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Filing: 1959-05-06
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Granted: 1963-12-03
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Expires: 1979-05-06
Abstract
No abstract record available.
Inventors
- 👤 Everett H Schroeder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:17
CPC Classifications
G; G01; G01C; G01C23/00; G01C23/005
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
180 words
IN AN INSTRUMENT SYSTEM; A FIRST AND SECOND INSTRUMENT HAVING A FIRST AND SECOND RESPECTIVE INPUT MEANS; A FIRST AND SECOND SOURCE OF PRESSURE CONNECTIBLE TO EACH OF SAID FIRST AND SECOND RESPECTIVE INPUT MEANS; AND A FIRST AND SECOND AUTOMATIC INSTRUMENT CORRECTING MEANS FOR EACH OF SAID FIRST AND SECOND INSTRUMENT; SAID FIRST INSTRUMENT CORRECTING MEANS BEING CALIBRATED FOR CORRECTING THE READING OF SAID FIRST AND SECOND INSTRUMENTS WHEN DRIVEN BY SAID FIRST SOURCE OF PRESSURE; SAID SECOND INSTRUMENT CORRECTING MEANS BEING CALIBRATED FOR CORRECTING THE READING OF SAID FIRST AND SECOND INSTRUMENTS WHEN DRIVEN BY SAID SECOND SOURCE OF PRESSURE; A PRESSURE SOURCE SELECTOR AND AN INSTRUMENT CORRECTING MEANS SELECTOR; SAID PRESSURE SOURCE SELECTOR SELECTIVELY CONNECTING EITHER OF SAID FIRST OR SAID SECOND SOURCE OF PRESSURE TO SAID INPUT MEANS OF SAID FIRST AND SECOND INSTRUMENT; SAID INSTRUMENT CORRECTING MEANS SELECTOR SELECTIVELY CONNECTING EITHER OF SAID FIRST OR SAID SECOND INSTRUMENT CORRECTING MEANS TO SAID FIRST AND SECOND INSTRUMENTS; SAID INSTRUMENT CORRECTION SELECTOR MEANS AND SAID PRESSURE SELECTOR MEANS BEING OPERATIVELY CONNECTED TO ONE ANOTHER FOR SIMULTANEOUS OPERATION.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-12-02 | 1967-06-03 | 1967-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-02 | 1971-06-03 | 1971-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-02 | 1975-06-03 | 1975-12-03 | $7700.00 | Window Closed / Lapsed |