US3476520A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chemical addition of gas to liquid solvent apparatus
Assignee: DANIEL T HOVEY
•
Filing: 1966-09-19
•
Granted: 1969-11-04
•
Expires: 1986-09-19
Abstract
No abstract record available.
Inventors
- 👤 Daniel T Hovey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:55
CPC Classifications
A; A23; A23L; A23L2/00; A23L2/40
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US19960A
Cited
US20382A
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US65500A
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US437318A
Cited
US705570A
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US1539284A
Cited
US2334211A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-11-03 | 1973-05-05 | 1973-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-03 | 1977-05-05 | 1977-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-03 | 1981-05-05 | 1981-11-04 | $7700.00 | Window Closed / Lapsed |