US2949280A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mobile rock drill rig
Assignee: Joy Manufacturing Co
•
Filing: 1957-05-14
•
Granted: 1960-08-16
•
Expires: 1977-05-14
Abstract
No abstract record available.
Inventors
- 👤 John C Curtis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:09
CPC Classifications
E; E21; E21B; E21B7/00; E21B7/02; E21B7/027; E21B15/00; E21B15/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US298625A
Cited
US2135619A
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US2217674A
Cited
US2316672A
Cited
US2491273A
Cited
US2842340A
Cited
US2845251A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-16 | 1964-02-15 | 1964-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-16 | 1968-02-15 | 1968-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-16 | 1972-02-15 | 1972-08-16 | $7700.00 | Window Closed / Lapsed |