US3512370A
Expired / Lapsed
US
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Combined liquid gas-mechanical freezing process and apparatus therefor
Assignee: DON E TUCKER
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Filing: 1967-03-14
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Granted: 1970-05-19
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Expires: 1987-03-14
Abstract
No abstract record available.
Inventors
- 👤 Tom H Murphy
- 👤 Don E Tucker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:12
CPC Classifications
F; F25; F25D; F25D16/00; F25D17/00; F25D17/04; F25D17/042; F25D2400/00; F25D2400/20; F25D2400/30; F25D3/00; F25D3/10
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) | 1973-05-18 | 1973-11-17 | 1974-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-05-18 | 1977-11-17 | 1978-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-05-18 | 1981-11-17 | 1982-05-19 | $7700.00 | Window Closed / Lapsed |