US1938997A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transmission
Assignee: Individual
•
Filing: 1931-08-03
•
Granted: 1933-12-12
•
Expires: 1951-08-03
Abstract
No abstract record available.
Inventors
- 👤 Charles R Burroughs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:48
CPC Classifications
F; F16; F16H; F16H29/00; F16H29/02; F16H29/22; Y; Y10; Y10T; Y10T74/00; Y10T74/15; Y10T74/1503; Y10T74/1505; Y10T74/1506; Y10T74/1508; Y10T74/151; Y10T74/1558; Y10T74/1565
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) | 1936-12-11 | 1937-06-12 | 1937-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1940-12-11 | 1941-06-12 | 1941-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1944-12-11 | 1945-06-12 | 1945-12-12 | $7700.00 | Window Closed / Lapsed |