US3515100A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Trepan with automatic stop means
Assignee: AUSTENAL EUROPA Inc
•
Filing: 1967-06-27
•
Granted: 1970-06-02
•
Expires: 1987-06-27
Abstract
No abstract record available.
Inventors
- 👤 Arnold Keller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:30
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/16; A61B17/1695; Y; Y10; Y10T; Y10T408/00; Y10T408/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2504075A
Cited
GB201371A
Cited
US2299267A
Cited
US2401548A
Cited
US2525669A
Cited
US2675003A
Cited
US2842131A
Cited
US2967441A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-06-01 | 1973-12-01 | 1974-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-06-01 | 1977-12-01 | 1978-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-06-01 | 1981-12-01 | 1982-06-02 | $7700.00 | Window Closed / Lapsed |