US3415271A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve assembly for reciprocating pumps and the like
Assignee: WOMA APPBAU WOLFGANG MAASBERG
•
Filing: 1965-12-17
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Granted: 1968-12-10
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Expires: 1985-12-17
Abstract
No abstract record available.
Inventors
- 👤 Maasberg Wolfgang
- 👤 Heinrich Willy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:37
CPC Classifications
F; F04; F04B; F04B53/00; F04B53/10; F04B53/102; F04B53/1032; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7838; Y10T137/7904; Y10T137/7922; Y10T137/7929; Y10T137/7937
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1405525A
Cited
US1799704A
Cited
US1949208A
Cited
US2630294A
Cited
US2649277A
Cited
US3030978A
Cited
US3084709A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-12-10 | 1972-06-10 | 1972-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-10 | 1976-06-10 | 1976-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-10 | 1980-06-10 | 1980-12-10 | $7700.00 | Window Closed / Lapsed |