US2747515A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotational piston pump
Assignee: Individual
•
Filing: 1951-12-28
•
Granted: 1956-05-29
•
Expires: 1971-12-28
Abstract
No abstract record available.
Inventors
- 👤 Montelius Carl Oscar Josef
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:33
CPC Classifications
F; F01; F01B; F01B3/00; F01B3/10; F01B3/103; F01B3/106; F01B3/0032; F01B3/0044; F01B3/0052; F01B3/0082; F01B3/0085; F01B3/0088
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1970133A
Cited
US2069651A
Cited
US2273468A
Cited
US2455062A
Cited
US2420806A
Cited
US2646754A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-29 | 1959-11-28 | 1960-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-29 | 1963-11-28 | 1964-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-29 | 1967-11-28 | 1968-05-29 | $7700.00 | Window Closed / Lapsed |