US2019026A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric drive
Assignee: Electric Boat Corp
•
Filing: 1934-03-19
•
Granted: 1935-10-29
•
Expires: 1954-03-19
Abstract
No abstract record available.
Inventors
- 👤 Lawrence Y Spear
- 👤 Hugo E Grieshaber
- 👤 Nibbs Ernest
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:22
CPC Classifications
F; F02; F02B; F02B63/00; F02B63/04; F02B75/00; F02B75/16; F02B75/18; F02B75/20; H; H02; H02K; H02K7/00; H02K7/18; H02K7/1807; H02K7/1815; F02B63/042; Y; Y10; Y10T; Y10T74/00; Y10T74/21; Y10T74/2186
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) | 1938-10-28 | 1939-04-29 | 1939-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1942-10-28 | 1943-04-29 | 1943-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1946-10-28 | 1947-04-29 | 1947-10-29 | $7700.00 | Window Closed / Lapsed |