US2495351A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air conditioning apparatus
Assignee: Individual
•
Filing: 1946-11-25
•
Granted: 1950-01-24
•
Expires: 1966-11-25
Abstract
No abstract record available.
Inventors
- 👤 Charles L Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:45
CPC Classifications
B; B60; B60H; B60H1/00; B60H1/00457; B60H1/00464; B64; B64D; B64D13/00; B64D13/06; B64D13/08; Y; Y02; Y02T; Y02T50/00; Y02T50/50
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2056353A
Cited
US1890888A
Cited
US2033983A
Cited
US2173661A
Cited
US2317339A
Cited
US2338953A
Cited
US2356772A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-01-23 | 1953-07-25 | 1954-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-01-23 | 1957-07-25 | 1958-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-01-23 | 1961-07-25 | 1962-01-24 | $7700.00 | Window Closed / Lapsed |