US2715344A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Planetary gear transmission for drilling apparatus
Assignee: Individual
•
Filing: 1951-05-18
•
Granted: 1955-08-16
•
Expires: 1971-05-18
Abstract
No abstract record available.
Inventors
- 👤 Arutunoff Armais
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 05:43
CPC Classifications
F; F16; F16H; F16H1/00; F16H1/28; F16H1/46; E; E21; E21B; E21B4/00; E21B4/04; Y; Y10; Y10S; Y10S415/00; Y10S415/901
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US936870A
Cited
US2186064A
Cited
US2286236A
Cited
US2497659A
Cited
US2460629A
Cited
US2552859A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-08-15 | 1959-02-14 | 1959-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-08-15 | 1963-02-14 | 1963-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-08-15 | 1967-02-14 | 1967-08-16 | $7700.00 | Window Closed / Lapsed |