Patent US2492788A successfully refreshed from Google Patents.
US2492788A
Expired / Lapsed
US
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Regenerator
Assignee: Airco Inc
•
Filing: 1947-05-24
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Granted: 1949-12-27
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Expires: 1967-05-24
Abstract
No abstract record available.
Inventors
- 👤 Dennis Wolcott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:50
CPC Classifications
F; F25; F25J; F25J5/00; F25J5/002; F25J2205/00; F25J2205/24; Y; Y10; Y10S; Y10S165/00; Y10S165/009; Y10S62/00; Y10S62/902; Y10S62/909
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1538686A
Cited
FR597686A
Cited
GB291402A
Cited
USRE19140E
Cited
US1835148A
Cited
GB386754A
Cited
US2097434A
Cited
US2214672A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-12-26 | 1953-06-27 | 1953-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-12-26 | 1957-06-27 | 1957-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-12-26 | 1961-06-27 | 1961-12-27 | $7700.00 | Window Closed / Lapsed |