US2961965A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control arrangement in a pump having a pump chamber of periodically variable volume
Assignee: Svenska AB Gasaccumulator
•
Filing: 1955-10-04
•
Granted: 1960-11-29
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Expires: 1975-10-04
Abstract
No abstract record available.
Inventors
- 👤 Senning Ake
- 👤 Astradsson Per Anton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 07:46
CPC Classifications
F; F04; F04B; F04B43/00; F04B43/08; F04B43/10; A; A61; A61M; A61M60/00; A61M60/10; A61M60/104; A61M60/109; A61M60/113; A61M60/30; A61M60/36; A61M60/38; A61M60/50; A61M60/80; A61M60/845; A61M60/851; F04B43/086; F04B49/00; F04B49/16; G; G05; G05D; G05D9/00; G05D9/04; A61M60/855; A61M60/89; A61M60/892; A61M60/894; Y; Y10; Y10S; Y10S128/00; Y10S128/03
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE86795C
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US2733660A
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US2734458A
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US684806A
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FR336394A
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US1411145A
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US1621221A
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GB600298A
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US2619907A
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US2711697A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-11-29 | 1964-05-30 | 1964-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-29 | 1968-05-30 | 1968-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-29 | 1972-05-30 | 1972-11-29 | $7700.00 | Window Closed / Lapsed |