US2133151A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radio receiving system for automobiles
Assignee: Individual
•
Filing: 1936-08-06
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Granted: 1938-10-11
•
Expires: 1956-08-06
Abstract
No abstract record available.
Inventors
- 👤 Paul L Rittenhouse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:55
CPC Classifications
B; B60; B60R; B60R11/00; B60R11/02; B60R11/0205; B60R11/0217; H; H04; H04R; H04R1/00; H04R1/02; H04R1/021; B60R2011/0001; B60R2011/0003; B60R2011/0012; B60R2011/0015; B60R2011/0029; B60R2011/0042; B60R2011/0043; B60R2011/0045
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) | 1941-10-10 | 1942-04-11 | 1942-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1945-10-10 | 1946-04-11 | 1946-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1949-10-10 | 1950-04-11 | 1950-10-11 | $7700.00 | Window Closed / Lapsed |