Patent US1678097A successfully refreshed from Google Patents.
US1678097A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bearing for angle attachments for dental handpieces
Assignee: M F PATTERSON DENTAL SUPPLY CO
•
Filing: 1925-03-26
•
Granted: 1928-07-24
•
Expires: 1945-03-26
Abstract
No abstract record available.
Inventors
- 👤 Lauritz B Andresen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:43
CPC Classifications
A; A61; A61C; A61C1/00; A61C1/08; A61C1/18; A61C1/181; Y; Y10; Y10T; Y10T279/00; Y10T279/17; Y10T279/17761; Y10T279/17769
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1931-07-24 | 1932-01-23 | 1932-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1935-07-24 | 1936-01-23 | 1936-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1939-07-24 | 1940-01-23 | 1940-07-24 | $7700.00 | Window Closed / Lapsed |