US2495969A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable air conditioner
Assignee: Individual
•
Filing: 1945-08-10
•
Granted: 1950-01-31
•
Expires: 1965-08-10
Abstract
No abstract record available.
Inventors
- 👤 William F Hoffman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 03:21
CPC Classifications
F; F24; F24F; F24F3/00; F24F3/12; F24F3/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB393117A
Cited
US2087436A
Cited
FR850106A
Cited
US2237690A
Cited
US2249159A
Cited
US2289983A
Cited
US2287147A
Cited
US2343820A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-01-30 | 1953-08-01 | 1954-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-01-30 | 1957-08-01 | 1958-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-01-30 | 1961-08-01 | 1962-01-31 | $7700.00 | Window Closed / Lapsed |