US3576996A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Instrument for measuring the net flux of radiant energy through a plane
Assignee: United States Department of the Air Force
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Filing: 1969-04-14
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Granted: 1971-05-04
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Expires: 1989-04-14
Abstract
Abstract A pair of solar radiation-absorbing surfaces mounted on opposite sides of a probe utilize the Seebeck and Peltier effects to maintain equal surface temperatures thereby avoiding errors due to wind. The current produced by the effects is a measure of the net radiation.
Inventors
- 👤 Donald W Stevens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:39
CPC Classifications
G; G01; G01J; G01J5/00; G01J5/10; G01J5/12; G01J5/02; G01J5/0295; G01J5/14; G01J5/16; G01J1/00; G01J1/42; G01J2001/4266
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3379883A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-05-03 | 1974-11-02 | 1975-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-03 | 1978-11-02 | 1979-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-03 | 1982-11-02 | 1983-05-04 | $7700.00 | Window Closed / Lapsed |