Patent US2673522A successfully refreshed from Google Patents.
US2673522A
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US
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Diaphragm pump
Assignee: Bendix Aviation Corp
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Filing: 1951-04-10
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Granted: 1954-03-30
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Expires: 1971-04-10
Abstract
No abstract record available.
Inventors
- 👤 John W Dickey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:27
CPC Classifications
F; F04; F04B; F04B23/00; F04B23/02; F04B23/021; F04B17/00; F04B17/03; F04B17/04; F04B17/046; F04B43/00; F04B43/02; F04B43/06; F04B43/067; F04B53/00; F04B53/10; F04B53/1037
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE20510E
Cited
US1614100A
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US1568447A
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US1713073A
Cited
US1922264A
Cited
DE577401C
Cited
US2014613A
Cited
US2473726A
Cited
US2472067A
Cited
US2533164A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-03-29 | 1957-09-28 | 1958-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-29 | 1961-09-28 | 1962-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-29 | 1965-09-28 | 1966-03-30 | $7700.00 | Window Closed / Lapsed |