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Patent US3373756A successfully refreshed from Google Patents.
US3373756A
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Apparatus and method for feeding chemicals into liquid systems
Assignee: GARRATT CALLAHAN Co
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Filing: 1966-06-28
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Granted: 1968-03-19
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Expires: 1986-06-28
Abstract
No abstract record available.
Inventors
- 👤 Herman J Franz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 09:34
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/68; C02F1/685; C02F1/688; Y; Y10; Y10T; Y10T137/00; Y10T137/0318; Y10T137/4891
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-03-19 | 1971-09-18 | 1972-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-19 | 1975-09-18 | 1976-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-19 | 1979-09-18 | 1980-03-19 | $7700.00 | Window Closed / Lapsed |