US1990514A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flexible shafting and method of producing same
Assignee: SS White Dental Manufacturing Co
•
Filing: 1928-12-10
•
Granted: 1935-02-12
•
Expires: 1948-12-10
Abstract
No abstract record available.
Inventors
- 👤 Robert C Angell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:28
CPC Classifications
F; F16; F16C; F16C1/00; F16C1/02; D; D07; D07B; D07B3/00; D07B3/02; D07B3/04; D07B3/045; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/4984; Y10T29/49842; Y10T29/49861
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) | 1938-02-11 | 1938-08-13 | 1939-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1942-02-11 | 1942-08-13 | 1943-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1946-02-11 | 1946-08-13 | 1947-02-12 | $7700.00 | Window Closed / Lapsed |