US2950929A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety joint
Assignee: California Research LLC
•
Filing: 1957-03-29
•
Granted: 1960-08-30
•
Expires: 1977-03-29
Abstract
No abstract record available.
Inventors
- 👤 Kingsley M Nicolson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:51
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)
US966925A
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US995966A
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US1041712A
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US1113556A
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US1883071A
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US2015786A
Cited
US2067377A
Cited
US2202261A
Cited
US2210815A
Cited
US2586015A
Cited
US2673751A
Cited
US2648553A
Cited
US2804319A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-30 | 1964-02-29 | 1964-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-30 | 1968-02-29 | 1968-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-30 | 1972-02-29 | 1972-08-30 | $7700.00 | Window Closed / Lapsed |