US2494128A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of increasing the axial tensile strength of threaded joints
Assignee: National Supply Co
•
Filing: 1945-11-14
•
Granted: 1950-01-10
•
Expires: 1965-11-14
Abstract
No abstract record available.
Inventors
- 👤 John L Holmquist
- 👤 Paul W Pheneger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:07
CPC Classifications
F; F16; F16L; F16L15/00; F16L15/001; B; B21; B21D; B21D39/00; B21D39/04; E; E21; E21B; E21B17/00; E21B17/02; E21B17/08; F16L15/006; Y; Y10; Y10S; Y10S285/00; Y10S285/916
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-01-09 | 1953-07-11 | 1954-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-01-09 | 1957-07-11 | 1958-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-01-09 | 1961-07-11 | 1962-01-10 | $7700.00 | Window Closed / Lapsed |