US2565933A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ventilating exhaust structure
Assignee: Individual
•
Filing: 1948-03-22
•
Granted: 1951-08-28
•
Expires: 1968-03-22
Abstract
No abstract record available.
Inventors
- 👤 Claude B Schneible
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:03
CPC Classifications
F; F24; F24F; F24F9/00; B; B08; B08B; B08B15/00; B08B15/02; F24F13/00; F24F13/02; F24F13/06; F24F2013/0616; Y; Y10; Y10S; Y10S55/00; Y10S55/29
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1254725A
Cited
US1577509A
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US2210458A
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US2257516A
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US2277271A
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US2440692A
Cited
US2438606A
Cited
US2467505A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-08-27 | 1955-02-26 | 1955-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-08-27 | 1959-02-26 | 1959-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-08-27 | 1963-02-26 | 1963-08-28 | $7700.00 | Window Closed / Lapsed |