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US2597469A
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Process for producing artificial ceramic teeth
Assignee: ZAHNFABRIK WIENAND SOEHNE und
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Filing: 1949-09-10
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Granted: 1952-05-20
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Expires: 1969-09-10
Abstract
No abstract record available.
Inventors
- 👤 Gatzka Konrad
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:25
CPC Classifications
C; C04; C04B; C04B33/00; C04B33/32; A; A61; A61C; A61C13/00; A61C13/08; A61C13/083; A61K; A61K6/00; A61K6/15; A61K6/16; A61K6/17; A61K6/80; A61K6/802; C04B33/02; C04B35/00; C04B35/622; C04B35/64; Y; Y10; Y10S; Y10S264/00; Y10S264/78
Claims Analysis
Total Claims: 0
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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) | 1955-05-20 | 1955-11-19 | 1956-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-05-20 | 1959-11-19 | 1960-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-05-20 | 1963-11-19 | 1964-05-20 | $7700.00 | Window Closed / Lapsed |