US2531032A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Propelling mechanism
Assignee: Individual
•
Filing: 1938-12-17
•
Granted: 1950-11-21
•
Expires: 1958-12-17
Abstract
No abstract record available.
Inventors
- 👤 Desmoulins Emile Hyacinthe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:23
CPC Classifications
B; B64; B64D; B64D35/00; B64D35/04
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
DE280257C
Cited
GB190709413A
Cited
GB191414743A
Cited
US1434620A
Cited
FR499985A
Cited
US1431683A
Cited
US1513981A
Cited
US1821450A
Cited
FR722339A
Cited
US1902374A
Cited
US1887429A
Cited
US1950971A
Cited
GB421889A
Cited
US2194060A
Cited
US2085483A
Cited
US2123057A
Cited
US2148313A
Cited
US2154532A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-11-20 | 1954-05-22 | 1954-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-11-20 | 1958-05-22 | 1958-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-11-20 | 1962-05-22 | 1962-11-21 | $7700.00 | Window Closed / Lapsed |