Patent US3566469A successfully refreshed from Google Patents.
US3566469A
Expired / Lapsed
US
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Method of obtaining dental bridge appliances by means of preformed crowns and the relevant tooth shaping crowns
Assignee: Individual
•
Filing: 1969-02-06
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Granted: 1971-03-02
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Expires: 1989-02-06
Abstract
Abstract MANUFACTURE OF DENTAL PROSTHETIC APPLIANCES INVOLVES THE PLACING OF PIECES OF WAX OR THE LIKE HAVING THE ROUGH SHAPE OF MISSING TEETH INTO THE GAPS OF THESE TEETH IN A PLASTER CAST, THEN PLACING OVER THESE WAX PIECES CAPS HAVING THE SHAPE OF THE MISSING TEETH AND REMOVING EXCESS WAX.
Inventors
- 👤 Ugo Pelizzari
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:34
CPC Classifications
A; A61; A61C; A61C13/00; A61C13/08; A61C13/081
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-03-01 | 1974-08-31 | 1975-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-01 | 1978-08-31 | 1979-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-01 | 1982-08-31 | 1983-03-02 | $7700.00 | Window Closed / Lapsed |