Patent US2711252A successfully refreshed from Google Patents.
US2711252A
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Dosing means for liquid systems
Assignee: TESTED APPLIANCE Co
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Filing: 1951-03-01
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Granted: 1955-06-21
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Expires: 1971-03-01
Abstract
No abstract record available.
Inventors
- 👤 Chauncey B Oliver
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:47
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/68; C02F1/685; C02F1/686; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2703; Y10T137/2931; Y10T137/3115; Y10T137/3127; Y10T137/8593; Y10T137/86187; Y10T137/86292; Y10T137/86324
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1577157A
Cited
US1680103A
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US1676134A
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US2128721A
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US2461334A
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US2418628A
Cited
US2556396A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-06-20 | 1958-12-20 | 1959-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-06-20 | 1962-12-20 | 1963-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-06-20 | 1966-12-20 | 1967-06-21 | $7700.00 | Window Closed / Lapsed |