Patent US3411764A successfully refreshed from Google Patents.
US3411764A
Expired / Lapsed
US
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Steelmaking plant having a mobile, straddle carriage converter support
Assignee: Pennsylvania Engineering Corp
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Filing: 1966-02-17
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Granted: 1968-11-19
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Expires: 1986-02-17
Abstract
No abstract record available.
Inventors
- 👤 Martin C Falk
- 👤 Jr Joseph Cugini
- 👤 Robert M Van Tassel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:49
CPC Classifications
C; C21; C21C; C21C5/00; C21C5/28; C21C5/42; C21C5/46; C21C5/4686; C21C5/285; C21C5/4673
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1719967A
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US698787A
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US2696663A
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FR1100594A
Cited
US2803450A
Cited
DE1026498B
Cited
US3013789A
Cited
US3147107A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-11-19 | 1972-05-20 | 1972-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-19 | 1976-05-20 | 1976-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-19 | 1980-05-20 | 1980-11-19 | $7700.00 | Window Closed / Lapsed |