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Patent US2146123A successfully refreshed from Google Patents.
US2146123A
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Diaphragm pump
Assignee: Logan Engineering Co
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Filing: 1936-05-25
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Granted: 1939-02-07
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Expires: 1956-05-25
Abstract
No abstract record available.
Inventors
- 👤 Henry H Logan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:50
CPC Classifications
F; F04; F04B; F04B1/00; F04B1/04; F04B1/053; F04B1/0404; F04B1/0426; F04B43/00; F04B43/02; F04B43/025; F04B43/026; F04B53/00; F04B53/10; F04B53/1002; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7904; Y10T137/7908; Y10T137/7909; Y10T137/791
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1942-02-06 | 1942-08-08 | 1943-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-02-06 | 1946-08-08 | 1947-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-02-06 | 1950-08-08 | 1951-02-07 | $7700.00 | Window Closed / Lapsed |