US3163285A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and apparatus for the production of improved steel tubing
Assignee: Lasalle Steel Co
•
Filing: 1960-12-07
•
Granted: 1964-12-29
•
Expires: 1980-12-07
Abstract
No abstract record available.
Inventors
- 👤 Elliot S Nachtman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 16:08
CPC Classifications
B; B21; B21C; B21C3/00; B21C3/02; B21C3/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
NL56974C
Cited
GB423868A
Cited
US2250610A
Cited
US2270398A
Cited
US2237112A
Cited
US2589881A
Cited
US2721651A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-12-29 | 1968-06-29 | 1968-12-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-12-29 | 1972-06-29 | 1972-12-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-12-29 | 1976-06-29 | 1976-12-29 | $7700.00 | Window Closed / Lapsed |