US2917829A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drilling instrument
Assignee: Chayes Dental Instrument Corp
•
Filing: 1958-02-24
•
Granted: 1959-12-22
•
Expires: 1978-02-24
Abstract
No abstract record available.
Inventors
- 👤 Richard W Page
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:08
CPC Classifications
A; A61; A61C; A61C1/00; A61C1/08; A61C1/14; A61C1/141; Y; Y10; Y10T; Y10T279/00; Y10T279/17; Y10T279/17411; Y10T279/17418; Y10T279/17957
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2180993A
Cited
US2606366A
Cited
US2611960A
Cited
DE842241C
Cited
US2716982A
Cited
US2833548A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-12-21 | 1963-06-22 | 1963-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-21 | 1967-06-22 | 1967-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-21 | 1971-06-22 | 1971-12-22 | $7700.00 | Window Closed / Lapsed |