US1384629A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Well-drilling apparatus
Assignee: Individual
•
Filing: 1918-03-29
•
Granted: 1921-07-12
•
Expires: 1938-03-29
Abstract
No abstract record available.
Inventors
- 👤 Overkamp Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:53
CPC Classifications
E; E21; E21B; E21B10/00; E21B10/62; E21B10/627; E21B10/633; Y; Y10; Y10T; Y10T279/00; Y10T279/17
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) | 1924-07-11 | 1925-01-10 | 1925-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1928-07-11 | 1929-01-10 | 1929-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1932-07-11 | 1933-01-10 | 1933-07-12 | $7700.00 | Window Closed / Lapsed |