US3458415A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for the treatment of liquids and liquid borne minerals and gases
Assignee: THOMAS M LEISLE
•
Filing: 1966-06-08
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Granted: 1969-07-29
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Expires: 1986-06-08
Abstract
No abstract record available.
Inventors
- 👤 John F Hughes Jr
- 👤 Thomas M Leisle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 07:43
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/46; C02F1/4602; C02F1/461; C02F1/46104; C02F1/46109; C02F1/20; C02F1/467; C02F1/469; C02F1/4691; C02F2201/00; C02F2201/46; C02F2201/461; C02F2201/46105; C02F2201/4612; C02F2201/46125; C02F2201/4613; C02F2201/4615; C02F2201/4616; C02F2201/4617; C02F2303/00; C02F2303/22
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) | 1972-07-28 | 1973-01-27 | 1973-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-28 | 1977-01-27 | 1977-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-28 | 1981-01-27 | 1981-07-29 | $7700.00 | Window Closed / Lapsed |