US1991990A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heating system for self-propelled vehicles
Assignee: Vapor Car Heating Co Inc
•
Filing: 1933-11-24
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Granted: 1935-02-19
•
Expires: 1953-11-24
Abstract
No abstract record available.
Inventors
- 👤 John Van Vulpen
- 👤 Edward A Russell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:20
CPC Classifications
B; B60; B60H; B60H1/00; B60H1/02; B60H1/03; B60H1/032
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) | 1938-02-18 | 1938-08-20 | 1939-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1942-02-18 | 1942-08-20 | 1943-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1946-02-18 | 1946-08-20 | 1947-02-19 | $7700.00 | Window Closed / Lapsed |