Patent US2640407A successfully refreshed from Google Patents.
US2640407A
Expired / Lapsed
US
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Automobile heater
Assignee: EA Laboratories Inc
•
Filing: 1949-07-19
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Granted: 1953-06-02
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Expires: 1969-07-19
Abstract
No abstract record available.
Inventors
- 👤 John M Aufiero
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:34
CPC Classifications
B; B60; B60H; B60H1/00; B60H1/00007; B60H1/00021; B60H1/00035; B60H1/00042; B60H2001/00078
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1676021A
Cited
US1999349A
Cited
US1925805A
Cited
US2131635A
Cited
US2131017A
Cited
US2164057A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-01 | 1956-12-01 | 1957-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-01 | 1960-12-01 | 1961-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-01 | 1964-12-01 | 1965-06-02 | $7700.00 | Window Closed / Lapsed |