Patent US3364575A successfully refreshed from Google Patents.
US3364575A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of securing a retention pin to a tooth
Assignee: WEST VIRGINIA F M CO
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Filing: 1965-07-12
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Granted: 1968-01-23
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Expires: 1985-07-12
Abstract
No abstract record available.
Inventors
- 👤 Nathan P Baker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:58
CPC Classifications
A; A61; A61C; A61C5/00; A61C5/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
64 words
A METHOD OF SECURING AN ELONGATED RETENTION PIN OF A GIVEN DIAMETER TO A TOOTH, COMPRISING THE STEPS OF: DRILLING A HOLE IN A DENTIN ZONE OF THE TOOTH, THE HOLE DIAMETER BEING SLIGHTLY SMALLER THAN THE GIVEN DIAMETER; AND DRIVING THE PIN INTO THE HOLE BY APPLICATION ON THE PIN OF AN ESSENTIALLY TORQUE-FREE FORCE DIRECTED SUBSTANTIALLLY ALONG THE LENGTH OF THE PIN.
Claim 2
Independent Claim
64 words
A METHOD OF SECURING AN ELONGATED RETENTION PIN OF A GIVEN DIAMETER TO A TOOTH, COMPRISING THE STEPS OF: DRILLING A HOLE IN A DENTIN ZONE OF THE TOOTH, THE HOLE DIAMETER BEING SLIGHTLY SMALLER THAN THE GIVEN DIAMETER; AND DRIVING THE PIN INTO THE HOLE BY APPLICATION ON THE PIN OF AN ESSENTIALLY TORQUE-FREE FORCE DIRECTED SUBSTANTIALLLY ALONG THE LENGTH OF THE PIN.
References Cited (Backward Citations)
US143418A
Cited
US1105105A
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GB142536A
Cited
US2187852A
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US2413333A
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US2362741A
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US2572714A
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US2690617A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-01-22 | 1971-07-24 | 1972-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-01-22 | 1975-07-24 | 1976-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-01-22 | 1979-07-24 | 1980-01-23 | $7700.00 | Window Closed / Lapsed |