US3067302A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydro-statically and dynamically responsive control for sump pumps and the like
Assignee: Individual
•
Filing: 1959-06-01
•
Granted: 1962-12-04
•
Expires: 1979-06-01
Abstract
No abstract record available.
Inventors
- 👤 Axel L Nielsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:44
CPC Classifications
H; H01; H01H; H01H35/00; H01H35/24; H01H35/242
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2103214A
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US2130607A
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US2411796A
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US2704351A
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US2488506A
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US2635546A
Cited
US2600618A
Cited
US2730591A
Cited
US2804516A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-12-03 | 1966-06-04 | 1966-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-03 | 1970-06-04 | 1970-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-03 | 1974-06-04 | 1974-12-04 | $7700.00 | Window Closed / Lapsed |