Patent US2050757A successfully refreshed from Google Patents.
US2050757A
Expired / Lapsed
US
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Coupling
Assignee: Individual
•
Filing: 1935-03-07
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Granted: 1936-08-11
•
Expires: 1955-03-07
Abstract
No abstract record available.
Inventors
- 👤 Leon Fred Len
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:28
CPC Classifications
A; A01; A01K; A01K91/00; A01K91/03; A01K91/04; F; F16; F16B; F16B45/00; F16B45/005; F16B45/012; F16B45/02; F16B45/036; Y; Y10; Y10S; Y10S24/00; Y10S24/30; Y10S24/31; Y10S24/33; Y10T; Y10T24/00; Y10T24/45; Y10T24/45005; Y10T24/45225; Y10T24/45969; Y10T24/45979
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) | 1939-08-11 | 1940-02-10 | 1940-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1943-08-11 | 1944-02-10 | 1944-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1947-08-11 | 1948-02-10 | 1948-08-11 | $7700.00 | Window Closed / Lapsed |