US3309772A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combination bladed bur diamond drill
Assignee: Syntex USA LLC
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Filing: 1964-06-18
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Granted: 1967-03-21
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Expires: 1984-06-18
Abstract
No abstract record available.
Inventors
- 👤 Nathaniel H Lieb
- 👤 Harvey E Rosenbluth
- 👤 Anthony J Turchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:46
CPC Classifications
A; A61; A61C; A61C3/00; A61C3/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
A DENTAL BUR COMPRISING A SHANK AND A HEAD HAVING A TIP, SAID HEAD HAVING A PLURALITY OF GROOVES CUT THEREIN, SAID GROOVES EXTENDING TO SAID TIP, SAID GROOVES DIVIDING SAID HEAD INTO A PLURALITY OF BLADES, WITH EACH BLADE HAVING A LEADING BLADE SURFACE AND A TRAILING BLADE SURFACE WITHIN SAID HEAD, WITH EACH LEADING BLADE SURFACE HAVING DIAMONDS BONDED THERETO, SAID HEAD HAVING LAND AREAS BETWEEN SAID GROOVES, WITH SAID LAND AREAS ALSO HAVING DIAMONDS BONDED THERETO, WHEREBY SAID BUR IS ADAPTED TO BE USED FOR CUTTING AND GRINDING OPERATIONS.
Claim 2
Dependent Claim
92 words
A DENTAL BUR COMPRISING A SHANK AND A HEAD HAVING A TIP, SAID HEAD HAVING A PLURALITY OF GROOVES CUT THEREIN, SAID GROOVES EXTENDING TO SAID TIP, SAID GROOVES DIVIDING SAID HEAD INTO A PLURALITY OF BLADES, WITH EACH BLADE HAVING A LEADING BLADE SURFACE AND A TRAILING BLADE SURFACE WITHIN SAID HEAD, WITH EACH LEADING BLADE SURFACE HAVING DIAMONDS BONDED THERETO, SAID HEAD HAVING LAND AREAS BETWEEN SAID GROOVES, WITH SAID LAND AREAS ALSO HAVING DIAMONDS BONDED THERETO, WHEREBY SAID BUR IS ADAPTED TO BE USED FOR CUTTING AND GRINDING OPERATIONS.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-03-20 | 1970-09-19 | 1971-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-20 | 1974-09-19 | 1975-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-20 | 1978-09-19 | 1979-03-21 | $7700.00 | Window Closed / Lapsed |