US2274033A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automobile heater
Assignee: NOBLITT SPARK IND Inc
•
Filing: 1937-03-12
•
Granted: 1942-02-24
•
Expires: 1957-03-12
Abstract
No abstract record available.
Inventors
- 👤 Earl C Booth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:46
CPC Classifications
B; B60; B60H; B60H1/00; B60H1/00457; Y; Y10; Y10S; Y10S165/00; Y10S165/228; Y10S165/302; Y10S165/311
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) | 1945-02-23 | 1945-08-25 | 1946-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1949-02-23 | 1949-08-25 | 1950-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1953-02-23 | 1953-08-25 | 1954-02-24 | $7700.00 | Window Closed / Lapsed |