US3470615A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dental crowns faced with polyglycol dimethacrylate and process for making
Assignee: AMERICAN TOOTH Inc A CORP OF CA
•
Filing: 1965-08-18
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Granted: 1969-10-07
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Expires: 1985-08-18
Abstract
No abstract record available.
Inventors
- 👤 Eugene J Petner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:29
CPC Classifications
A; A61; A61C; A61C13/00; A61C13/0003; A61C5/00; A61C5/70; A61C5/77; A61K; A61K6/00; A61K6/80; A61K6/884; A61K6/887; C; C08; C08F; C08F265/00; C08F265/04; C08F265/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2120006A
Cited
US2420570A
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US2486327A
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US2558139A
Cited
US2886890A
Cited
US2916469A
Cited
US3012287A
Cited
US3300547A
Cited
US3265202A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-06 | 1973-04-07 | 1973-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-06 | 1977-04-07 | 1977-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-06 | 1981-04-07 | 1981-10-07 | $7700.00 | Window Closed / Lapsed |