US2875697A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sump pump
Assignee: MARINE PRODUCTS Co
•
Filing: 1953-08-05
•
Granted: 1959-03-03
•
Expires: 1973-08-05
Abstract
No abstract record available.
Inventors
- 👤 Frank O Fernstrum
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 07:46
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/04; F04D29/046; F04D29/047; F04D29/043; F04D29/044; F04D7/00; F04D7/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2735613A
Cited
US106061A
Cited
US870310A
Cited
US1273913A
Cited
US1488237A
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US1500607A
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US1705263A
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US1758391A
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US1695846A
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US1883266A
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US1919375A
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US1981965A
Cited
US2362566A
Cited
FR916910A
Cited
US2399548A
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US2525370A
Cited
US2545600A
Cited
US2575568A
Cited
US2542896A
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US2499454A
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GB651619A
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US2766696A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-03-02 | 1962-09-01 | 1963-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-02 | 1966-09-01 | 1967-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-02 | 1970-09-01 | 1971-03-03 | $7700.00 | Window Closed / Lapsed |