US2737256A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acoustic pulse detector
Assignee: Individual
•
Filing: 1949-07-13
•
Granted: 1956-03-06
•
Expires: 1969-07-13
Abstract
No abstract record available.
Inventors
- 👤 Jr Edward E Simmons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:30
CPC Classifications
G; G01; G01S; G01S15/00; G01S15/88; Y; Y10; Y10S; Y10S116/00; Y10S116/18; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86549
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-03-06 | 1959-09-05 | 1960-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-03-06 | 1963-09-05 | 1964-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-03-06 | 1967-09-05 | 1968-03-06 | $7700.00 | Window Closed / Lapsed |