US1613461A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Connection between well-pipe sections of different materials
Assignee: Individual
•
Filing: 1926-06-01
•
Granted: 1927-01-04
•
Expires: 1946-06-01
Abstract
No abstract record available.
Inventors
- 👤 Edwin A Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:06
CPC Classifications
E; E21; E21B; E21B17/00; E21B17/02; E21B17/04; E21B17/046; F; F16; F16L; F16L13/00; F16L13/007; F16L15/00; F16L15/006; Y; Y10; Y10S; Y10S138/00; Y10S138/06
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) | 1930-01-03 | 1930-07-05 | 1931-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1934-01-03 | 1934-07-05 | 1935-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1938-01-03 | 1938-07-05 | 1939-01-04 | $7700.00 | Window Closed / Lapsed |