US2671182A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pulse coincidence indicator
Assignee: Individual
•
Filing: 1945-10-03
•
Granted: 1954-03-02
•
Expires: 1965-10-03
Abstract
No abstract record available.
Inventors
- 👤 Byron L Havens
- 👤 Robert M Walker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:32
CPC Classifications
G; G01; G01S; G01S1/00; G01S1/02; G01S1/08; G01S1/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2404527A
Cited
US2480837A
Cited
US2375709A
Cited
GB552072A
Cited
US2453711A
Cited
US2355363A
Cited
US2425330A
Cited
US2492700A
Cited
US2465368A
Cited
US2448041A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-03-01 | 1957-08-31 | 1958-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-01 | 1961-08-31 | 1962-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-01 | 1965-08-31 | 1966-03-02 | $7700.00 | Window Closed / Lapsed |