US2901893A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermal diffusion desorption cooling system
Assignee: Individual
•
Filing: 1956-05-24
•
Granted: 1959-09-01
•
Expires: 1976-05-24
Abstract
No abstract record available.
Inventors
- 👤 Alvin R Saltzman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:30
CPC Classifications
F; F25; F25B; F25B23/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1472051A
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DE465264C
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US1708600A
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US2734096A
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US927571A
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US947627A
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US990182A
Cited
US1156525A
Cited
US1798563A
Cited
US2643282A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-08-31 | 1963-03-02 | 1963-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-31 | 1967-03-02 | 1967-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-31 | 1971-03-02 | 1971-09-01 | $7700.00 | Window Closed / Lapsed |