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US3499522A
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Assignee: United States Steel Corp
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Filing: 1967-12-15
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Granted: 1970-03-10
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Expires: 1987-12-15
Abstract
No abstract record available.
Inventors
- 👤 Joseph B Novak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 02:33
CPC Classifications
B; B65; B65G; B65G67/00; B65G67/60; B65G67/606
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2678125A
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US2757782A
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US3003611A
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US3123889A
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US3137398A
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US3352406A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-09 | 1973-09-08 | 1974-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-09 | 1977-09-08 | 1978-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-09 | 1981-09-08 | 1982-03-10 | $7700.00 | Window Closed / Lapsed |