Patent US2974525A successfully refreshed from Google Patents.
US2689532A
Expired / Lapsed
US
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Nonrotating multipiston radial pump
Assignee: International Business Machines Corp
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Filing: 1951-01-09
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Granted: 1954-09-21
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Expires: 1971-01-09
Abstract
No abstract record available.
Inventors
- 👤 Jr Elias Orshansky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:43
CPC Classifications
F; F04; F04B; F04B1/00; F04B1/04; F04B1/053; F04B1/0531; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18056; Y10T74/18296
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB189515221A
Cited
US2471117A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-09-20 | 1958-03-22 | 1958-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-09-20 | 1962-03-22 | 1962-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-09-20 | 1966-03-22 | 1966-09-21 | $7700.00 | Window Closed / Lapsed |