Patent US2904681A successfully refreshed from Google Patents.
US2823346A
Expired / Lapsed
US
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Control apparatus responsive to rainfall
Assignee: Individual
•
Filing: 1954-07-14
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Granted: 1958-02-11
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Expires: 1974-07-14
Abstract
No abstract record available.
Inventors
- 👤 Alex C Weber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:47
CPC Classifications
B; B60; B60J; B60J7/00; B60J7/02; B60J7/04; B60J7/057; B60J7/0573
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1584356A
Cited
US2617972A
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US2611888A
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US2640958A
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US2672582A
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US2731588A
Cited
US2754460A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-02-10 | 1961-08-12 | 1962-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-02-10 | 1965-08-12 | 1966-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-02-10 | 1969-08-12 | 1970-02-11 | $7700.00 | Window Closed / Lapsed |