US2065932A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety joint
Assignee: HARRY P WICKERSHAM
•
Filing: 1932-11-22
•
Granted: 1936-12-29
•
Expires: 1952-11-22
Abstract
No abstract record available.
Inventors
- 👤 Black Millard Sumter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:33
CPC Classifications
E; E21; E21B; E21B17/00; E21B17/02; E21B17/04; E21B17/06; Y; Y10; Y10S; Y10S285/00; Y10S285/922
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) | 1939-12-29 | 1940-06-29 | 1940-12-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1943-12-29 | 1944-06-29 | 1944-12-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1947-12-29 | 1948-06-29 | 1948-12-29 | $7700.00 | Window Closed / Lapsed |