US2215901A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heating and ventilating means for vehicles
Assignee: Evans Products Co
•
Filing: 1936-04-09
•
Granted: 1940-09-24
•
Expires: 1956-04-09
Abstract
No abstract record available.
Inventors
- 👤 John N H Christman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:39
CPC Classifications
B; B60; B60H; B60H1/00; B60H1/00457; B60H1/00464; B60H1/00007; B60H1/00207; B60H2001/00214
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) | 1943-09-24 | 1944-03-25 | 1944-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-09-24 | 1948-03-25 | 1948-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-09-24 | 1952-03-25 | 1952-09-24 | $7700.00 | Window Closed / Lapsed |