US2646258A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automobile heater
Assignee: Individual
•
Filing: 1949-10-27
•
Granted: 1953-07-21
•
Expires: 1969-10-27
Abstract
No abstract record available.
Inventors
- 👤 Phelps M Freer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:29
CPC Classifications
F; F28; F28F; F28F3/00; F28F3/02; F28F3/04; F28F3/042; B; B60; B60H; B60H1/00; B60H1/00321; B60H1/00328; F28D; F28D9/00; F28D9/0025; F28F13/00; F28F13/06; F28F13/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-07-20 | 1957-01-19 | 1957-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-20 | 1961-01-19 | 1961-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-20 | 1965-01-19 | 1965-07-21 | $7700.00 | Window Closed / Lapsed |