US2777534A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carbon adsorber cooling means
Assignee: Individual
•
Filing: 1951-11-23
•
Granted: 1957-01-15
•
Expires: 1971-11-23
Abstract
No abstract record available.
Inventors
- 👤 Mcdonald Dan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 04:10
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/02; B01D53/04; B01D53/0407; B01D53/0446; B01D2253/00; B01D2253/10; B01D2253/102; B01D2257/00; B01D2257/80; B01D2257/90; B01D2259/00; B01D2259/40; B01D2259/40003; B01D53/0438
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2390490A
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US2573966A
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US2593132A
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US2633931A
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US2561441A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-01-15 | 1960-07-16 | 1961-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-15 | 1964-07-16 | 1965-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-15 | 1968-07-16 | 1969-01-15 | $7700.00 | Window Closed / Lapsed |