US4310312A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anterior tooth prosthesis
Assignee: Individual
•
Filing: 1980-06-10
•
Granted: 1982-01-12
•
Expires: 2000-06-10
Abstract
Abstract An anterior tooth prosthesis has a one-piece metal framework with laterally extending wings, a central saddle with a concave surface and a peg integral with the surface, and a plastic pontic having a peg-receiving mortise in which the peg is seated and secured.
Inventors
- 👤 Ronald P. Keller
- 👤 William G. Keller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:53
CPC Classifications
A; A61; A61C; A61C13/00; A61C13/225; A61C13/26
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
79 words
An anterior tooth prosthesis comprising a one-piece metal framework having laterally extending wings, a central saddle with a broad concave surface defining a mouth at an edge away from the gum adjacent the framework when the prosthesis is in place, and a peg integral with said surface and projecting toward said mouth, and a plastic pontic having a peg-receiving mortise in which said peg is seated and secured and a bite edge projecting beyond said mouth of said saddle.
Claim 2
Dependent Claim
79 words
An anterior tooth prosthesis comprising a one-piece metal framework having laterally extending wings, a central saddle with a broad concave surface defining a mouth at an edge away from the gum adjacent the framework when the prosthesis is in place, and a peg integral with said surface and projecting toward said mouth, and a plastic pontic having a peg-receiving mortise in which said peg is seated and secured and a bite edge projecting beyond said mouth of said saddle.
Claim 3
Dependent Claim
10 words
The prosthesis of claim 1 wherein the pontic is acrylic.
Claim 4
Dependent Claim
26 words
The prosthesis of claims 1 or 2 wherein said pontic has a filled, formed part extending from the root of said peg toward the gum line.
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) | 1985-01-11 | 1985-07-13 | 1986-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-01-11 | 1989-07-13 | 1990-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-01-11 | 1993-07-13 | 1994-01-12 | $7700.00 | Window Closed / Lapsed |