US1870696A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self cooling, drilling, and coring bit
Assignee: Individual
•
Filing: 1929-07-16
•
Granted: 1932-08-09
•
Expires: 1949-07-16
Abstract
No abstract record available.
Inventors
- 👤 Thomas G Taylor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:04
CPC Classifications
E; E21; E21B; E21B25/00; E21B25/02; E21B25/04; E21B4/00; E21B4/04; Y; Y10; Y10S; Y10S62/00; Y10S62/10; Y10S82/00; Y10S82/90
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) | 1935-08-09 | 1936-02-08 | 1936-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1939-08-09 | 1940-02-08 | 1940-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1943-08-09 | 1944-02-08 | 1944-08-09 | $7700.00 | Window Closed / Lapsed |