US2809429A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dental instrument assembly
Assignee: Individual
•
Filing: 1956-05-21
•
Granted: 1957-10-15
•
Expires: 1976-05-21
Abstract
No abstract record available.
Inventors
- 👤 Albert R Cerveris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:30
CPC Classifications
A; A61; A61B; A61B1/00; A61B1/24; A61B1/247; A61C; A61C1/00; A61C1/0007; A61C1/02; A61C1/05; A61C1/052
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US851483A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-10-14 | 1961-04-15 | 1961-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-14 | 1965-04-15 | 1965-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-14 | 1969-04-15 | 1969-10-15 | $7700.00 | Window Closed / Lapsed |