US1297633A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cooling and ventilating method.
Assignee: Individual
•
Filing: 1917-11-07
•
Granted: 1919-03-18
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Expires: 1937-11-07
Abstract
No abstract record available.
Inventors
- 👤 Charles S Ashley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:23
CPC Classifications
F; F25; F25D; F25D16/00; F24; F24F; F24F5/00; F24F5/0007; F24F5/0017; F24F5/0046; F24F5/005; F28; F28D; F28D20/00; F28D20/0034; F28D20/0043; Y; Y02; Y02B; Y02B10/00; Y02B10/40; Y02B30/00; Y02B30/54; Y02E; Y02E60/00; Y02E60/14
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) | 1922-03-17 | 1922-09-16 | 1923-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1926-03-17 | 1926-09-16 | 1927-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1930-03-17 | 1930-09-16 | 1931-03-18 | $7700.00 | Window Closed / Lapsed |