US2051965A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coupling
Assignee: Individual
•
Filing: 1934-10-09
•
Granted: 1936-08-25
•
Expires: 1954-10-09
Abstract
No abstract record available.
Inventors
- 👤 John T Roth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:19
CPC Classifications
B; B23; B23B; B23B31/00; B23B31/02; B23B31/10; B23B31/113; F; F16; F16B; F16B9/00; F16B9/05; F16B9/056; F16B2200/00; F16B2200/40; Y; Y10; Y10T; Y10T279/00; Y10T279/17; Y10T279/17863; Y10T409/00; Y10T409/30; Y10T409/309352; Y10T409/309408
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) | 1939-08-25 | 1940-02-24 | 1940-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1943-08-25 | 1944-02-24 | 1944-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1947-08-25 | 1948-02-24 | 1948-08-25 | $7700.00 | Window Closed / Lapsed |