US2068375A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Roller bit
Assignee: GLOBE OIL TOOIS Co
•
Filing: 1935-05-25
•
Granted: 1937-01-19
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Expires: 1955-05-25
Abstract
No abstract record available.
Inventors
- 👤 Alfred C Catland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:29
CPC Classifications
E; E21; E21B; E21B10/00; E21B10/08; E21B10/22; E21B10/10
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) | 1940-01-19 | 1940-07-20 | 1941-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1944-01-19 | 1944-07-20 | 1945-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1948-01-19 | 1948-07-20 | 1949-01-19 | $7700.00 | Window Closed / Lapsed |