Patent US2602883A successfully refreshed from Google Patents.
US2602883A
Expired / Lapsed
US
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Early warning detector
Assignee: Individual
•
Filing: 1942-11-17
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Granted: 1952-07-08
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Expires: 1962-11-17
Abstract
No abstract record available.
Inventors
- 👤 Koontz Clarence Edgar
- 👤 Irving H Page
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:25
CPC Classifications
G; G01; G01S; G01S7/00; G01S7/02; G01S7/021
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2061734A
Cited
US2266401A
Cited
US2218642A
Cited
US2228367A
Cited
US2352082A
Cited
US2381928A
Cited
US2358028A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-07-08 | 1956-01-07 | 1956-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-07-08 | 1960-01-07 | 1960-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-07-08 | 1964-01-07 | 1964-07-08 | $7700.00 | Window Closed / Lapsed |