US3000324A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vane for rotary pumps
Assignee: Rosaen Filter Co
•
Filing: 1958-10-06
•
Granted: 1961-09-19
•
Expires: 1978-10-06
Abstract
No abstract record available.
Inventors
- 👤 Oscar E Rosaen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 07:27
CPC Classifications
F; F01; F01C; F01C21/00; F01C21/08; F01C21/0809
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2731919A
Cited
GB185160A
Cited
US1805063A
Cited
AT137234B
Cited
US2393223A
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GB574364A
Cited
US2545238A
Cited
US2656796A
Cited
US2644402A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-09-18 | 1965-03-20 | 1965-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-09-18 | 1969-03-20 | 1969-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-09-18 | 1973-03-20 | 1973-09-19 | $7700.00 | Window Closed / Lapsed |