US2908482A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rock drill
Assignee: Joy Manufacturing Co
•
Filing: 1952-07-16
•
Granted: 1959-10-13
•
Expires: 1972-07-16
Abstract
No abstract record available.
Inventors
- 👤 John C Curtis
- 👤 Charles T Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:01
CPC Classifications
E; E21; E21B; E21B19/00; E21B19/08; E21B19/087
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE366838C
Cited
US1150592A
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FR432665A
Cited
FR423578A
Cited
US1754159A
Cited
US2165904A
Cited
US2289465A
Cited
US2294663A
Cited
US2617388A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-10-12 | 1963-04-13 | 1963-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-12 | 1967-04-13 | 1967-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-12 | 1971-04-13 | 1971-10-13 | $7700.00 | Window Closed / Lapsed |