US1454048A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and apparatus for sidetracking in deep-well drilling
Assignee: Reed Roller Bit Co
•
Filing: 1921-09-29
•
Granted: 1923-05-08
•
Expires: 1941-09-29
Abstract
No abstract record available.
Inventors
- 👤 Esperson Niels
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:15
CPC Classifications
E; E21; E21B; E21B29/00; E21B29/06; E21B7/00; E21B7/04; E21B7/06; E21B7/061
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) | 1926-05-07 | 1926-11-06 | 1927-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1930-05-07 | 1930-11-06 | 1931-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1934-05-07 | 1934-11-06 | 1935-05-08 | $7700.00 | Window Closed / Lapsed |