US2526754A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pipe coupling
Assignee: Armco Inc
•
Filing: 1948-02-03
•
Granted: 1950-10-24
•
Expires: 1968-02-03
Abstract
No abstract record available.
Inventors
- 👤 Fred N Johnson
- 👤 Harold D Ault
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:24
CPC Classifications
F; F16; F16L; F16L37/00; F16L37/08; F16L37/084; F16L37/096; F16L37/12; F16L37/20; F16L37/50; F16L37/54; Y; Y10; Y10S; Y10S292/00; Y10S292/04; Y10T; Y10T292/00; Y10T292/08; Y10T292/1043; Y10T292/1063; Y10T292/31; Y10T292/323
Claims Analysis
Total Claims: 0
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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) | 1953-10-23 | 1954-04-24 | 1954-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-23 | 1958-04-24 | 1958-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-23 | 1962-04-24 | 1962-10-24 | $7700.00 | Window Closed / Lapsed |