US1806933A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Of san francisco
Assignee: —
•
Filing: —
•
Granted: 1931-05-26
•
Expires: 1948-05-26
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:38
CPC Classifications
C; C10; C10M; C10M125/00; C10M125/06; C10M2201/00; C10M2201/04; C10M2201/043; C10M2203/00; C10M2203/02; C10M2203/022; C10M2203/024; C10M2203/04; C10M2203/10; C10M2203/102; C10M2205/00; C10M2205/18; C10M2207/00; C10M2207/40; C10M2207/404; C10N; C10N2040/00; C10N2040/20; C10N2040/22; C10N2070/00; C10N2070/02
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) | 1934-05-25 | 1934-11-24 | 1935-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1938-05-25 | 1938-11-24 | 1939-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1942-05-25 | 1942-11-24 | 1943-05-26 | $7700.00 | Window Closed / Lapsed |