US3405446A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tooth color matching apparatus
Assignee: Individual
•
Filing: 1965-09-17
•
Granted: 1968-10-15
•
Expires: 1985-09-17
Abstract
No abstract record available.
Inventors
- 👤 Wiener William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:19
CPC Classifications
A; A61; A61C; A61C19/00; A61C19/10; B; B29; B29C; B29C65/00; B29C65/48; B29C65/4805; B29C65/481; B29C65/4825
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2789353A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-10-15 | 1972-04-15 | 1972-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-15 | 1976-04-15 | 1976-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-15 | 1980-04-15 | 1980-10-15 | $7700.00 | Window Closed / Lapsed |