Patent US2845089A successfully refreshed from Google Patents.
US2845089A
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Assignee: Elgin Softener Corp
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Filing: 1954-03-12
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Granted: 1958-07-29
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Expires: 1974-03-12
Abstract
No abstract record available.
Inventors
- 👤 Chester R Nickols
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:33
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/42; F; F16; F16K; F16K15/00; F16K15/02; F16K15/04; Y; Y10; Y10T; Y10T137/00; Y10T137/7287; Y10T137/7306; Y10T137/7722; Y10T137/7837; Y10T137/7847; Y10T137/7848; Y10T137/7849; Y10T137/7904; Y10T137/7908; Y10T137/7909; Y10T137/791; Y10T137/7911; Y10T137/8593; Y10T137/86493; Y10T137/86718; Y10T137/86734; Y10T137/87265; Y10T137/87322; Y10T137/87539; Y10T137/87555; Y10T137/877; Y10T137/87829
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US412651A
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US753999A
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US796985A
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US1852717A
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US1890494A
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US2601968A
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US2703582A
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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) | 1961-07-28 | 1962-01-27 | 1962-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-28 | 1966-01-27 | 1966-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-28 | 1970-01-27 | 1970-07-29 | $7700.00 | Window Closed / Lapsed |