Patent US3272138A successfully refreshed from Google Patents.
US3272138A
Expired / Lapsed
US
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Variable volume pump with protection against overheating
Assignee: Continental Machines Inc
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Filing: 1964-02-17
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Granted: 1966-09-13
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Expires: 1984-02-17
Abstract
No abstract record available.
Inventors
- 👤 Eugene N Connoy
- 👤 Richard W Hoffmann
- 👤 James W Parkin
- 👤 Charles H Whitmore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 02:35
CPC Classifications
F; F04; F04C; F04C14/00; F04C14/18; F04C14/22; F04C14/223; F04C15/00; F04C15/0096
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2637275A
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US2649739A
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US2768585A
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US2875699A
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US2805628A
Cited
US2740256A
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US3120814A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-12 | 1970-03-14 | 1970-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-12 | 1974-03-14 | 1974-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-12 | 1978-03-14 | 1978-09-13 | $7700.00 | Window Closed / Lapsed |