US2530767A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gear-tooth rotary pump
Assignee: Individual
•
Filing: 1946-01-25
•
Granted: 1950-11-21
•
Expires: 1966-01-25
Abstract
No abstract record available.
Inventors
- 👤 Hamill William Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:31
CPC Classifications
F; F04; F04C; F04C2/00; F04C2/08; F04C2/082; F04C2/084; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19949; Y10T74/19963; Y10T74/19967
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US15280A
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US65922A
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US1863335A
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US1771863A
Cited
US2082412A
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US2195886A
Cited
US2246487A
Cited
US2291354A
Cited
US2407753A
Cited
US2383194A
Cited
US2403796A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-11-20 | 1954-05-22 | 1954-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-11-20 | 1958-05-22 | 1958-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-11-20 | 1962-05-22 | 1962-11-21 | $7700.00 | Window Closed / Lapsed |