Patent US2897561A successfully refreshed from Google Patents.
US2648774A
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Fluid sterilizer
Assignee: Automatic Pump and Softener Corp
•
Filing: 1947-09-10
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Granted: 1953-08-11
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Expires: 1967-09-10
Abstract
No abstract record available.
Inventors
- 👤 Fred W Whitlock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:03
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/30; C02F1/32; C02F1/325; A; A23; A23B; A23B2/00; A23B2/50; A23B2/53; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86292; Y10T137/86324; Y10T137/87571; Y10T137/87587
Claims Analysis
Total Claims: 0
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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) | 1956-08-10 | 1957-02-09 | 1957-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-10 | 1961-02-09 | 1961-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-10 | 1965-02-09 | 1965-08-11 | $7700.00 | Window Closed / Lapsed |