US2820906A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radiant energy sensing system
Assignee: North American Aviation Corp
•
Filing: 1952-01-28
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Granted: 1958-01-21
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Expires: 1972-01-28
Abstract
No abstract record available.
Inventors
- 👤 Victor A Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:45
CPC Classifications
G; G01; G01S; G01S11/00; G01S11/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
NL33746C
Cited
US1618757A
Cited
US2369622A
Cited
US2428990A
Cited
US2439373A
Cited
US2421012A
Cited
US2513367A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-01-20 | 1961-07-22 | 1962-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-20 | 1965-07-22 | 1966-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-20 | 1969-07-22 | 1970-01-21 | $7700.00 | Window Closed / Lapsed |