Patent US4511909A successfully refreshed from Google Patents.
Patent US3470708A successfully refreshed from Google Patents.
US3470708A
Expired / Lapsed
US
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Solid-adsorbent air-conditioning device
Assignee: Gas Technology Institute
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Filing: 1967-10-12
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Granted: 1969-10-07
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Expires: 1987-10-12
Abstract
No abstract record available.
Inventors
- 👤 Sanford A Weil
- 👤 William R Staats
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:06
CPC Classifications
F; F24; F24F; F24F3/00; F24F3/12; F24F3/14; F24F3/1411; F24F3/1423; F24F2003/1458; F24F2003/1464; F24F2203/00; F24F2203/10; F24F2203/1016; F24F2203/1032; F24F2203/104; F24F2203/1056; F24F2203/1064; F24F2203/1076; F24F2203/1084; F24F2203/1092
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB814449A
Cited
US2926502A
Cited
US3009684A
Cited
US2968165A
Cited
US3009540A
Cited
US2964298A
Cited
US3144901A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-06 | 1973-04-07 | 1973-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-06 | 1977-04-07 | 1977-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-06 | 1981-04-07 | 1981-10-07 | $7700.00 | Window Closed / Lapsed |