US3535768A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for producing welded beams
Assignee: Inland Steel Co
•
Filing: 1967-09-11
•
Granted: 1970-10-27
•
Expires: 1987-09-11
Abstract
No abstract record available.
Inventors
- 👤 Carey L Pruitt
- 👤 Norbert W Delacey
- 👤 Paul Shattuck
- 👤 George Mersot
- 👤 Edward Fabrici
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:06
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/0026
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1889780A
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US3300839A
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US3217659A
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US3362056A
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US3246392A
Cited
US3342973A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-10-26 | 1974-04-27 | 1974-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-26 | 1978-04-27 | 1978-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-26 | 1982-04-27 | 1982-10-27 | $7700.00 | Window Closed / Lapsed |