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US3243792A
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Detection devices
Assignee: Lockheed Martin Corp
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Filing: 1963-04-08
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Granted: 1966-03-29
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Expires: 1983-04-08
Abstract
No abstract record available.
Inventors
- 👤 William F Hamilton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:08
CPC Classifications
G; G01; G01K; G01K7/00; G01K7/003
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
79 words
A DETECTION DEVICE WHICH COMPRISES: (A) A POLARIZED TITANATE PYROELECTRIC BODY HAVING SPACED, PARALLEL SIDES; (B) METAL ELECTRODES DIRECTLY ATTACHED TO EACH OF SAID SIDES, EACH OF SAID ELECTRODES BEING A CONDUCTOR OF HEAT AND ELECTRICITY; AND (C) A CIRCUIT MEANS INCLUDING TWO SEPARATE UNIDIRECTIONAL CIRCUITS CONNECTED IN PARALLEL BETWEEN SAID ELECTRODES, EACH OF SAID SEPARATE CIRCUITS INCLUDING A GAS GLOW TUBE AND A DIODE, SAID SEPARATE CIRCUITS BEING CONNECTED SO AS TO PERMIT CURRENT FLOW IN OPPOSITE DIRECTIONS.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-03-28 | 1969-09-27 | 1970-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-28 | 1973-09-27 | 1974-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-28 | 1977-09-27 | 1978-03-29 | $7700.00 | Window Closed / Lapsed |