US3397731A
Expired / Lapsed
US
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Method and apparatus for reconcentrating liquid desiccant
Assignee: Maloney Crawford Tank Corp
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Filing: 1966-06-06
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Granted: 1968-08-20
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Expires: 1986-06-06
Abstract
No abstract record available.
Inventors
- 👤 Charles K Gravis
- 👤 Harold S Wood
- 👤 George F Seipp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:52
CPC Classifications
C; C07; C07D; C07D207/00; C07D207/02; C07D207/18; C07D207/22; C07D207/24; C07D207/26; C07D207/263; C07D207/267; B; B01; B01D; B01D1/00; B01D1/14; B01D17/00; B01D17/02; B01D17/0205; B01D3/00; B01D3/34; B01D3/343; B01D3/346; B01D53/00; B01D53/14; B01D53/1493; B01D53/26; B01D53/263; B01D53/34; B01D53/46; B01D53/48; B01D53/50; B01D53/507; B01D53/52; B01D53/526; C01; C01B; C01B17/00; C01B17/48; C01B17/50; C01B17/60; C01B3/00; C01B3/50; C01B3/52; C07C; C07C7/00; C07C7/11; C07D201/00; C07D201/16; C10; C10L; C10L3/00; C10L3/06; C10L3/10; C01B2203/00; C01B2203/04; C01B2203/0415; C01B2203/0465; C01B2203/0475; C01B2203/048; C01B2203/0485; C01B2203/0495; C10G; C10G2300/00; C10G2300/10; C10G2300/1025
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-08-20 | 1972-02-19 | 1972-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-08-20 | 1976-02-19 | 1976-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-08-20 | 1980-02-19 | 1980-08-20 | $7700.00 | Window Closed / Lapsed |