US2920829A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heater for vehicles
Assignee: Individual
•
Filing: 1956-08-13
•
Granted: 1960-01-12
•
Expires: 1976-08-13
Abstract
No abstract record available.
Inventors
- 👤 Charles W Shane
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:05
CPC Classifications
B; B60; B60H; B60H1/00; B60H1/00271; B60H1/00295
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR959295A
Cited
US1896068A
Cited
US2002626A
Cited
US1968522A
Cited
GB447055A
Cited
US2124925A
Cited
DE710698C
Cited
US2417636A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-01-11 | 1963-07-13 | 1964-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-11 | 1967-07-13 | 1968-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-11 | 1971-07-13 | 1972-01-12 | $7700.00 | Window Closed / Lapsed |