Patent EP0269131A2 successfully refreshed from Google Patents.
US3209458A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Endodontic cutter
Assignee: Individual
•
Filing: 1960-12-05
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Granted: 1965-10-05
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Expires: 1980-12-05
Abstract
No abstract record available.
Inventors
- 👤 Louis J Rosen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:11
CPC Classifications
A; A61; A61C; A61C3/00; A61C5/00; A61C5/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
141 words
A SCISSOR-LIKE TOOL FOR INSERTION IN THE PULP CAVITY OF A TOOTH, SAID TOOL HAVING A PAIR OF HANDLES, A PAIR OF LEGS LONGITUDINALLY EXTENDING IN SUBSTANTIAL ALIGNMENT WITH SAID HANDLES, SAID LEGS BEING MOVABLE WITH RESPECT TO EACH OTHER, THE FORWARD END OF EACH OF SAID LEGS HAVING A TRANSVERSELY EXTENDING JAW, DEFINING A TRANSVERSE CUTTING PLANE AT ITS FORWARDMOST END, SAID LEGS AND JAWS HAVING A SUFFICIENTLY SMALL CROSS-SECTION TO PERMIT THE ENTRY OF SAID LEGS INTO THE PULP CAVITY OF A TOOTH, WITH SAID CUTTING PLANE POSITIONED AT THE INNER TERMINATION OF THE PULP CAVITY, AND IN TRANSVERSE ALIGNMENT WITH THE LOWERMOST PROTRUDING PORTION OF A SILVER POINT SECURED TO THE ROOT CANAL, THE INNER EDGES OF SAID JAWS FACING EACH OTHER, AND HAVING CUTTING EDGES MOVABLE TOGETHER WITHIN SAID CUTTING PLANE, FOR SIMULTANEOUSLY GRIPPING THE PROTRUDING PORTION
Claim 2
Dependent Claim
141 words
A SCISSOR-LIKE TOOL FOR INSERTION IN THE PULP CAVITY OF A TOOTH, SAID TOOL HAVING A PAIR OF HANDLES, A PAIR OF LEGS LONGITUDINALLY EXTENDING IN SUBSTANTIAL ALIGNMENT WITH SAID HANDLES, SAID LEGS BEING MOVABLE WITH RESPECT TO EACH OTHER, THE FORWARD END OF EACH OF SAID LEGS HAVING A TRANSVERSELY EXTENDING JAW, DEFINING A TRANSVERSE CUTTING PLANE AT ITS FORWARDMOST END, SAID LEGS AND JAWS HAVING A SUFFICIENTLY SMALL CROSS-SECTION TO PERMIT THE ENTRY OF SAID LEGS INTO THE PULP CAVITY OF A TOOTH, WITH SAID CUTTING PLANE POSITIONED AT THE INNER TERMINATION OF THE PULP CAVITY, AND IN TRANSVERSE ALIGNMENT WITH THE LOWERMOST PROTRUDING PORTION OF A SILVER POINT SECURED TO THE ROOT CANAL, THE INNER EDGES OF SAID JAWS FACING EACH OTHER, AND HAVING CUTTING EDGES MOVABLE TOGETHER WITHIN SAID CUTTING PLANE, FOR SIMULTANEOUSLY GRIPPING THE PROTRUDING PORTION
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) | 1968-10-04 | 1969-04-05 | 1969-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-04 | 1973-04-05 | 1973-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-04 | 1977-04-05 | 1977-10-05 | $7700.00 | Window Closed / Lapsed |