US2957422A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pumps
Assignee: DEMPSTER MILL Manufacturing Co
•
Filing: 1956-01-09
•
Granted: 1960-10-25
•
Expires: 1976-01-09
Abstract
No abstract record available.
Inventors
- 👤 Herman M Loeber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 00:56
CPC Classifications
F; F04; F04B; F04B11/00; F04B15/00; F04B15/06; F04B15/08; F04B49/00; F04B49/12; F04B49/123; F04B49/125; F04B49/126; F04B53/00; F04B53/10; F04B53/12; F04B53/125; F04B53/127; Y; Y10; Y10S; Y10S417/00; Y10S417/901
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2733661A
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US2313551A
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US2370582A
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US2503907A
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US2528653A
Cited
US2458230A
Cited
US2696785A
Cited
US2592237A
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US2771846A
Cited
US2811108A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-10-25 | 1964-04-25 | 1964-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-10-25 | 1968-04-25 | 1968-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-10-25 | 1972-04-25 | 1972-10-25 | $7700.00 | Window Closed / Lapsed |