Patent US2547079A successfully refreshed from Google Patents.
US2547079A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transmission for drilling machines
Assignee: CONST ELECTRO MECANIQUES DE SA
•
Filing: 1948-04-17
•
Granted: 1951-04-03
•
Expires: 1968-04-17
Abstract
No abstract record available.
Inventors
- 👤 Gerentes Jean
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:53
CPC Classifications
E; E21; E21B; E21B44/00; E21B44/02; Y; Y10; Y10T; Y10T408/00; Y10T408/16; Y10T408/17; Y10T408/173; Y10T408/65; Y10T74/00; Y10T74/18; Y10T74/18024; Y10T74/18568; Y10T74/18576
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1954-04-02 | 1954-10-02 | 1955-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-02 | 1958-10-02 | 1959-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-02 | 1962-10-02 | 1963-04-03 | $7700.00 | Window Closed / Lapsed |