US963690A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary pump.
Assignee: Individual
•
Filing: 1908-11-12
•
Granted: 1910-07-05
•
Expires: 1928-11-12
Abstract
No abstract record available.
Inventors
- 👤 Frank J Curtis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:17
CPC Classifications
F; F01; F01C; F01C21/00; F01C21/08; F01C21/0809; F01C21/0818; F01C21/0854; F01C21/0863
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) | 1913-07-04 | 1914-01-03 | 1914-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1917-07-04 | 1918-01-03 | 1918-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1921-07-04 | 1922-01-03 | 1922-07-05 | $7700.00 | Window Closed / Lapsed |