US2621857A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automobile heater
Assignee: Individual
•
Filing: 1947-01-11
•
Granted: 1952-12-16
•
Expires: 1967-01-11
Abstract
No abstract record available.
Inventors
- 👤 Howard H Wixon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:37
CPC Classifications
B; B60; B60H; B60H1/00; B60H1/02; B60H1/03
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1284643A
Cited
US1416946A
Cited
US1441486A
Cited
US1947716A
Cited
US2024364A
Cited
US1966882A
Cited
US2038193A
Cited
US2155278A
Cited
US2147906A
Cited
US2131017A
Cited
US2191173A
Cited
US2256303A
Cited
US2300010A
Cited
US2268440A
Cited
US2342901A
Cited
US2405144A
Cited
US2431918A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-16 | 1956-06-16 | 1956-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-16 | 1960-06-16 | 1960-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-16 | 1964-06-16 | 1964-12-16 | $7700.00 | Window Closed / Lapsed |