US3468260A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary pump with axially movable radial vanes
Assignee: Individual
•
Filing: 1967-12-01
•
Granted: 1969-09-23
•
Expires: 1987-12-01
Abstract
No abstract record available.
Inventors
- 👤 William Perry Belden
- 👤 Katherine Arnel Belden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:36
CPC Classifications
F; F01; F01C; F01C21/00; F01C21/10; F04; F04C; F04C2/00; F04C2/30; F04C2/34; F04C2/344; F04C2/3448; F04C2230/00; F04C2230/60; F05; F05C; F05C2225/00; F05C2225/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1743977A
Cited
US2154458A
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US2371081A
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US2491100A
Cited
US2980030A
Cited
US2966860A
Cited
US3166019A
Cited
US3187993A
Cited
US3304879A
Cited
US3223044A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-22 | 1973-03-24 | 1973-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-22 | 1977-03-24 | 1977-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-22 | 1981-03-24 | 1981-09-23 | $7700.00 | Window Closed / Lapsed |