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US3210847A
Expired / Lapsed
US
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Dentist's drill
Assignee: Individual
•
Filing: 1962-09-04
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Granted: 1965-10-12
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Expires: 1982-09-04
Abstract
No abstract record available.
Inventors
- 👤 Prufer Albert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:13
CPC Classifications
A; A61; A61C; A61C1/00; A61C1/02; A61C1/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US950759A
Cited
US2370632A
Cited
US2861462A
Cited
US2829285A
Cited
US3094780A
Cited
US2866267A
Cited
US3109238A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-10-11 | 1969-04-12 | 1969-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-11 | 1973-04-12 | 1973-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-11 | 1977-04-12 | 1977-10-12 | $7700.00 | Window Closed / Lapsed |