US2701532A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means for minimizing wear of internal external gear pumps
Assignee: Individual
•
Filing: 1952-05-08
•
Granted: 1955-02-08
•
Expires: 1972-05-08
Abstract
No abstract record available.
Inventors
- 👤 William E Bakewell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:42
CPC Classifications
F; F04; F04C; F04C2/00; F04C2/08; F04C2/10; F04C2/101
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1970146A
Cited
US1636259A
Cited
US1732871A
Cited
US1768818A
Cited
US2373368A
Cited
US2531808A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-02-07 | 1958-08-09 | 1959-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-02-07 | 1962-08-09 | 1963-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-02-07 | 1966-08-09 | 1967-02-08 | $7700.00 | Window Closed / Lapsed |