US2672819A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Expansible-chamber and positivedisplacement type pump of variable capacity
Assignee: Schweizerische Lokomotiv und Maschinenfabrik AG (SLM)
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Filing: 1949-12-01
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Granted: 1954-03-23
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Expires: 1969-12-01
Abstract
No abstract record available.
Inventors
- 👤 Widmer Leo Peter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:16
CPC Classifications
F; F04; F04B; F04B7/00; F04B7/04; F04B1/00; F04B1/12; F04B1/14; F04B1/141; F04B1/143; F04B49/00; F04B49/22; F04B49/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE316885C
Cited
US2193612A
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US2114565A
Cited
FR867082A
Cited
US2439879A
Cited
US2534153A
Cited
US2578139A
Cited
US2578146A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-03-22 | 1957-09-21 | 1958-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-22 | 1961-09-21 | 1962-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-22 | 1965-09-21 | 1966-03-23 | $7700.00 | Window Closed / Lapsed |