US3064741A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Feed controlling device for rock drilling mechanisms
Assignee: Ingersoll Rand Co
•
Filing: 1952-12-10
•
Granted: 1962-11-20
•
Expires: 1972-12-10
Abstract
No abstract record available.
Inventors
- 👤 William A Morrison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:32
CPC Classifications
E; E21; E21B; E21B19/00; E21B19/08; E21B19/087
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US13646A
Cited
FR423578A
Cited
US1902574A
Cited
US2078780A
Cited
US2289465A
Cited
US2321475A
Cited
US2598112A
Cited
DE815941C
Cited
US2610030A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-11-19 | 1966-05-21 | 1966-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-11-19 | 1970-05-21 | 1970-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-11-19 | 1974-05-21 | 1974-11-20 | $7700.00 | Window Closed / Lapsed |