Patent US2864148A successfully refreshed from Google Patents.
US2864148A
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US
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Safety collar
Assignee: Jersey Production Research Co
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Filing: 1957-01-28
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Granted: 1958-12-16
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Expires: 1977-01-28
Abstract
No abstract record available.
Inventors
- 👤 Harold V Wait
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:08
CPC Classifications
E; E21; E21B; E21B41/00; E21B41/0021; E21B17/00; E21B17/006; E21B19/00; E21B19/12; E21D; E21D15/00; E21D15/14; E21D15/28; E21D15/30; E21D15/306; Y; Y10; Y10T; Y10T279/00; Y10T279/12; Y10T279/1274; Y10T279/1283
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-12-15 | 1962-06-16 | 1962-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-15 | 1966-06-16 | 1966-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-15 | 1970-06-16 | 1970-12-16 | $7700.00 | Window Closed / Lapsed |