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US2142038A
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Assignee: Radio Patents Corp
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Filing: 1936-08-26
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Granted: 1938-12-27
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Expires: 1956-08-26
Abstract
No abstract record available.
Inventors
- 👤 Bier Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:44
CPC Classifications
H; H03; H03G; H03G5/00; H03G5/16; H03G5/24; H03G5/26
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) | 1941-12-26 | 1942-06-27 | 1942-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1945-12-26 | 1946-06-27 | 1946-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1949-12-26 | 1950-06-27 | 1950-12-27 | $7700.00 | Window Closed / Lapsed |