US1804328A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ship propulsion
Assignee: General Electric Co
•
Filing: 1927-08-31
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Granted: 1931-05-05
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Expires: 1947-08-31
Abstract
No abstract record available.
Inventors
- 👤 Roy O Dunham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 19:36
CPC Classifications
B; B63; B63H; B63H23/00; B63H23/22; B63H23/24; B63H21/00; B63H21/12; B63H21/17; B63H21/21; B63H2021/216
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) | 1934-05-04 | 1934-11-03 | 1935-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1938-05-04 | 1938-11-03 | 1939-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1942-05-04 | 1942-11-03 | 1943-05-05 | $7700.00 | Window Closed / Lapsed |