US2862744A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rock drill bit socket
Assignee: Thompson Products Ltd
•
Filing: 1955-06-07
•
Granted: 1958-12-02
•
Expires: 1975-06-07
Abstract
No abstract record available.
Inventors
- 👤 John S Edgar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:26
CPC Classifications
E; E21; E21B; E21B17/00; E21B17/02; E21B17/04; E21B17/046; E21B17/0465; F; F16; F16B; F16B2200/00; F16B2200/10; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49945; Y10T403/00; Y10T403/70
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US419638A
Cited
US2018073A
Cited
US2111244A
Cited
US2569275A
Cited
US2654573A
Cited
US2708249A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-12-01 | 1962-06-02 | 1962-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-01 | 1966-06-02 | 1966-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-01 | 1970-06-02 | 1970-12-02 | $7700.00 | Window Closed / Lapsed |