US2677329A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary pump
Assignee: Individual
•
Filing: 1950-05-15
•
Granted: 1954-05-04
•
Expires: 1970-05-15
Abstract
No abstract record available.
Inventors
- 👤 Frank M Owen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:12
CPC Classifications
F; F04; F04C; F04C14/00; F04C14/10; F04C5/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1086488A
Cited
US1215881A
Cited
US1986202A
Cited
US2070738A
Cited
US2362724A
Cited
US2336344A
Cited
US2336580A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-05-03 | 1957-11-02 | 1958-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-03 | 1961-11-02 | 1962-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-03 | 1965-11-02 | 1966-05-04 | $7700.00 | Window Closed / Lapsed |