US2472759A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermopile for measuring air temperatures
Assignee: Individual
•
Filing: 1945-05-03
•
Granted: 1949-06-07
•
Expires: 1965-05-03
Abstract
No abstract record available.
Inventors
- 👤 Raspet August
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 00:02
CPC Classifications
G; G01; G01K; G01K7/00; G01K7/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1077219A
Cited
US1639412A
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US1818221A
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GB406453A
Cited
US2076211A
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FR761973A
Cited
US2141453A
Cited
US2304489A
Cited
US2393196A
Cited
US2357193A
Cited
US2432145A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-06-06 | 1952-12-06 | 1953-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-06-06 | 1956-12-06 | 1957-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-06-06 | 1960-12-06 | 1961-06-07 | $7700.00 | Window Closed / Lapsed |