US964140A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Foundation for derricks.
Assignee: Individual
•
Filing: 1910-04-11
•
Granted: 1910-07-12
•
Expires: 1930-04-11
Abstract
No abstract record available.
Inventors
- 👤 Michael R Zahniser
- 👤 Montgomery J Zahniser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:06
CPC Classifications
E; E04; E04H; E04H12/00; E04H12/22; E04H12/2253; E04H12/2269; Y; Y10; Y10T; Y10T24/00; Y10T24/44; Y10T24/44966; Y10T24/44974; Y10T403/00; Y10T403/71; Y10T403/7129; Y10T403/7135; Y10T403/7158; Y10T403/7182
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) | 1913-07-11 | 1914-01-10 | 1914-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1917-07-11 | 1918-01-10 | 1918-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1921-07-11 | 1922-01-10 | 1922-07-12 | $7700.00 | Window Closed / Lapsed |