US2513240A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Welded steel pipe
Assignee: Wheeling Steel Corp
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Filing: 1949-01-10
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Granted: 1950-06-27
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Expires: 1969-01-10
Abstract
No abstract record available.
Inventors
- 👤 Erle G Hill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:29
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22; B23K35/24; B23K35/30; B23K35/3053
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
65 words
A WELDED AND THREADED PEIPE OF BASIC OPEN HEARTH STEEL CONTAINING ABOUT .06% TO .08% CARBON, ABOUT .30% TO .35% MANGANESE, ABOUT .040% TO .085% PHOSPHORUS, ABOUT .040% TO .060% SULPHUR, AND ABOUT .010% TO .015% NITROGEN, THE BALANCE BEING SUBSTANTIALLY ALL IRON EXCEPT FOR INCIDENTIAL IMPURITIES NORMALLY FOUND IN OPEN HEARTH STEEL, THE PIPE BEING CHARACTERIZED BY A SOUND WELD AND GOOD FIELD-THREADING PROPERTIES.
References Cited (Backward Citations)
US2319635A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-06-26 | 1953-12-26 | 1954-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-06-26 | 1957-12-26 | 1958-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-06-26 | 1961-12-26 | 1962-06-27 | $7700.00 | Window Closed / Lapsed |