US2556313A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary pump
Assignee: Individual
•
Filing: 1947-09-08
•
Granted: 1951-06-12
•
Expires: 1967-09-08
Abstract
No abstract record available.
Inventors
- 👤 Harold B Adams
- 👤 Maurice C Peters
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:26
CPC Classifications
F; F04; F04C; F04C2/00; F04C2/30; F04C2/34; F04C2/344; F04C2/3441; F04C2/3443
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US262740A
Cited
US460522A
Cited
US462614A
Cited
US1105076A
Cited
US1093005A
Cited
US1101904A
Cited
US1686532A
Cited
FR728568A
Cited
GB488354A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-06-11 | 1954-12-11 | 1955-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-06-11 | 1958-12-11 | 1959-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-06-11 | 1962-12-11 | 1963-06-12 | $7700.00 | Window Closed / Lapsed |