Patent US3047789A successfully refreshed from Google Patents.
US3437048A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gear pump
Assignee: Chandler Evans Inc
•
Filing: 1967-08-09
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Granted: 1969-04-08
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Expires: 1987-08-09
Abstract
No abstract record available.
Inventors
- 👤 Godwin L Noell
- 👤 John E Cygnor
- 👤 Jack G Sundberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:43
CPC Classifications
F; F04; F04C; F04C15/00; F04C15/0003; F04C15/0007; F04C15/0019
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US89268A
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US164147A
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US171651A
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US1118533A
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US1478417A
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US1783209A
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US2697987A
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US2742862A
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US2996999A
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US3208393A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-04-07 | 1972-10-07 | 1973-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-07 | 1976-10-07 | 1977-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-07 | 1980-10-07 | 1981-04-08 | $7700.00 | Window Closed / Lapsed |