US3098932A
Expired / Lapsed
US
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Infra-red gas detection system
Assignee: Leesona Corp
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Filing: 1959-11-19
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Granted: 1963-07-23
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Expires: 1979-11-19
Abstract
No abstract record available.
Inventors
- 👤 Laudon Herbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:47
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/17; G01N21/25; G01N21/31; G01N21/35; G01N21/3504; G08; G08B; G08B17/00; G08B17/10; G08B17/103; G08B17/11; G08B17/113
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
54 words
AN AREA MONITORING GAS DETECTION SYSTEM INCLUDING A PLURALITY OF SEPARATE TRANSMITTERS AND RECEIVERS EACH SPACED ABOUT THE PERIPHERY OF THE AREA TO BE MONITORED AND EACH HAVING THEIR AXIS DIRECTED TOWARD THE CENTER OF SAID AREA, A POLYGONAL REFLECTOR ROTATABLY MOUNTED AT THE INTERSECTION OF SAID AXES AND MEANS FOR ROTATING SAID REFLECTOR.
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) | 1966-07-22 | 1967-01-21 | 1967-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-07-22 | 1971-01-21 | 1971-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-07-22 | 1975-01-21 | 1975-07-23 | $7700.00 | Window Closed / Lapsed |