US933386A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oil-well derrick.
Assignee: Individual
•
Filing: 1908-08-13
•
Granted: 1909-09-07
•
Expires: 1928-08-13
Abstract
No abstract record available.
Inventors
- 👤 Thomas A Neill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:21
CPC Classifications
E; E21; E21B; E21B15/00; Y; Y10; Y10T; Y10T403/00; Y10T403/34; Y10T403/341; Y10T403/342; Y10T403/345; Y10T403/346; Y10T403/57; Y10T403/5761; Y10T403/5786; Y10T403/70; Y10T403/7041
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) | 1912-09-06 | 1913-03-08 | 1913-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1916-09-06 | 1917-03-08 | 1917-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1920-09-06 | 1921-03-08 | 1921-09-07 | $7700.00 | Window Closed / Lapsed |