Patent US2580293A successfully refreshed from Google Patents.
US2580293A
Expired / Lapsed
US
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Thermopile radiometer
Assignee: University of California Berkeley
•
Filing: 1948-03-20
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Granted: 1951-12-25
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Expires: 1968-03-20
Abstract
No abstract record available.
Inventors
- 👤 Joseph T Gier
- 👤 Llewellyn M K Boelter
- 👤 Bromberg Robert
- 👤 Everett R Dempster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:11
CPC Classifications
G; G01; G01J; G01J5/00; G01J5/10; G01J5/12; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/4902; Y10T29/49071
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2256160A
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US2278744A
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US2310026A
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US2287460A
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US2377516A
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US2373804A
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US2408093A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-12-24 | 1955-06-25 | 1955-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-24 | 1959-06-25 | 1959-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-24 | 1963-06-25 | 1963-12-25 | $7700.00 | Window Closed / Lapsed |