Patent US2808934A successfully refreshed from Google Patents.
US2808934A
Expired / Lapsed
US
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Swimming pool chlorinator
Assignee: Individual
•
Filing: 1954-04-26
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Granted: 1957-10-08
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Expires: 1974-04-26
Abstract
No abstract record available.
Inventors
- 👤 Carlos C Rivas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:18
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/68; C02F1/685; C02F1/686; C02F2103/00; C02F2103/42; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2499; Y10T137/2559; Y10T137/2564; Y10T137/2572
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1577157A
Cited
US1220398A
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US1680103A
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US1934791A
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US2162074A
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US2447031A
Cited
US2418628A
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US2541799A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-10-07 | 1961-04-08 | 1961-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-07 | 1965-04-08 | 1965-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-07 | 1969-04-08 | 1969-10-08 | $7700.00 | Window Closed / Lapsed |