US1265706A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Collar and lead ring and process of coupling drill-pipes.
Assignee: Individual
•
Filing: 1917-04-28
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Granted: 1918-05-07
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Expires: 1937-04-28
Abstract
No abstract record available.
Inventors
- 👤 Hugh A Bardeen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 17:36
CPC Classifications
B; B23; B23P; B23P6/00; B23P6/04; Y; Y10; Y10S; Y10S29/00; Y10S29/035; Y10T; Y10T29/00; Y10T29/49; Y10T29/49718; Y10T29/49732; Y10T29/49734; Y10T29/49826; Y10T29/49863; Y10T29/49865
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) | 1921-05-06 | 1921-11-05 | 1922-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1925-05-06 | 1925-11-05 | 1926-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1929-05-06 | 1929-11-05 | 1930-05-07 | $7700.00 | Window Closed / Lapsed |