Patent US2038469A successfully refreshed from Google Patents.
US2038469A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transmission band
Assignee: Individual
•
Filing: 1934-12-27
•
Granted: 1936-04-21
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Expires: 1954-12-27
Abstract
No abstract record available.
Inventors
- 👤 Charles A Bannister
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:36
CPC Classifications
F; F16; F16G; F16G9/00; Y; Y10; Y10T; Y10T24/00; Y10T24/16; Y10T24/1608; Y10T24/1624; Y10T24/1676; Y10T24/39; Y10T24/3907; Y10T24/45; Y10T24/45225; Y10T24/45602; Y10T24/45775; Y10T24/45874; Y10T403/00; Y10T403/36; Y10T403/364
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) | 1939-04-21 | 1939-10-21 | 1940-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1943-04-21 | 1943-10-21 | 1944-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1947-04-21 | 1947-10-21 | 1948-04-21 | $7700.00 | Window Closed / Lapsed |