US2154397A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wave motor
Assignee: HERMAN WALTER COOK SR
•
Filing: 1937-07-19
•
Granted: 1939-04-11
•
Expires: 1957-07-19
Abstract
No abstract record available.
Inventors
- 👤 Charles E Cook
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:23
CPC Classifications
F; F03; F03B; F03B13/00; F03B13/12; F03B13/14; F03B13/16; F03B13/18; F03B13/1805; F03B13/1825; F03B13/183; F05; F05B; F05B2250/00; F05B2250/20; F05B2250/25; Y; Y02; Y02E; Y02E10/00; Y02E10/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1942-04-10 | 1942-10-10 | 1943-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-04-10 | 1946-10-10 | 1947-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-04-10 | 1950-10-10 | 1951-04-11 | $7700.00 | Window Closed / Lapsed |