US3396778A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for cast cladding
Assignee: Lukens Steel Co
•
Filing: 1964-08-24
•
Granted: 1968-08-13
•
Expires: 1984-08-24
Abstract
No abstract record available.
Inventors
- 👤 Niels H Jensen
- 👤 Robert A Westman
- 👤 Edgar L Fogleman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:51
CPC Classifications
C; C23; C23C; C23C6/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1952201A
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US2310893A
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US2395723A
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US2385206A
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US2639490A
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GB722314A
Cited
US2715252A
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US2763040A
Cited
GB772214A
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US2937422A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-08-13 | 1972-02-12 | 1972-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-08-13 | 1976-02-12 | 1976-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-08-13 | 1980-02-12 | 1980-08-13 | $7700.00 | Window Closed / Lapsed |