US2156938A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Motorboat
Assignee: Individual
•
Filing: 1938-08-04
•
Granted: 1939-05-02
•
Expires: 1958-08-04
Abstract
No abstract record available.
Inventors
- 👤 Wilbert A Edwards
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 02:46
CPC Classifications
B; B63; B63H; B63H5/00; B63H5/07; B63H5/125; B63H2005/1254; B63H2005/1256; B63H25/00; B63H25/42; B63H2025/425; B63H23/00; B63H23/02; B63H23/04
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) | 1942-05-01 | 1942-10-31 | 1943-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-05-01 | 1946-10-31 | 1947-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-05-01 | 1950-10-31 | 1951-05-02 | $7700.00 | Window Closed / Lapsed |