US2851777A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tool for grinding, polishing, boring and milling for dental and medical purposes
Assignee: Individual
•
Filing: 1954-11-15
•
Granted: 1958-09-16
•
Expires: 1974-11-15
Abstract
No abstract record available.
Inventors
- 👤 Hoffmeister Erich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:43
CPC Classifications
A; A61; A61C; A61C1/00; A61C1/08; A61C1/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US723872A
Cited
US2008894A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-15 | 1962-03-17 | 1962-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-15 | 1966-03-17 | 1966-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-15 | 1970-03-17 | 1970-09-16 | $7700.00 | Window Closed / Lapsed |