US2967339A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ladle
Assignee: Lukens Steel Co
•
Filing: 1958-09-26
•
Granted: 1961-01-10
•
Expires: 1978-09-26
Abstract
No abstract record available.
Inventors
- 👤 James L Ma
- 👤 Charles R Beamesderfer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:33
CPC Classifications
B; B22; B22D; B22D41/00; B22D41/04; C; C21; C21B; C21B3/00; C21B3/04; C21B3/06; C21B3/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US673556A
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US714159A
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US1223479A
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US1386702A
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US1534187A
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US1651445A
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US1880242A
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US2122032A
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US2828516A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-01-10 | 1964-07-11 | 1965-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-10 | 1968-07-11 | 1969-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-10 | 1972-07-11 | 1973-01-10 | $7700.00 | Window Closed / Lapsed |