Patent US2737896A successfully refreshed from Google Patents.
US2737896A
Expired / Lapsed
US
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Diaphragm pump with stroke adjusting mechanism
Assignee: Dorr Oliver Inc
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Filing: 1953-04-09
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Granted: 1956-03-13
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Expires: 1973-04-09
Abstract
No abstract record available.
Inventors
- 👤 Neyer Louis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:02
CPC Classifications
F; F04; F04B; F04B49/00; F04B49/12; Y; Y10; Y10T; Y10T74/00; Y10T74/16; Y10T74/1625; Y10T74/165; Y10T74/18; Y10T74/18056; Y10T74/18176
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-03-13 | 1959-09-12 | 1960-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-03-13 | 1963-09-12 | 1964-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-03-13 | 1967-09-12 | 1968-03-13 | $7700.00 | Window Closed / Lapsed |