US1476481A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drill bit
Assignee: Individual
•
Filing: 1920-01-27
•
Granted: 1923-12-04
•
Expires: 1940-01-27
Abstract
No abstract record available.
Inventors
- 👤 Samuel F Bashara
- 👤 Joseph F Bashara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:37
CPC Classifications
E; E21; E21B; E21B10/00; E21B10/62; Y; Y10; Y10T; Y10T279/00; Y10T279/17; Y10T279/17923
Claims Analysis
Total Claims: 0
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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) | 1926-12-03 | 1927-06-04 | 1927-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1930-12-03 | 1931-06-04 | 1931-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1934-12-03 | 1935-06-04 | 1935-12-04 | $7700.00 | Window Closed / Lapsed |