Patent US2479641A successfully refreshed from Google Patents.
US2479641A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Crucible
Assignee: Individual
•
Filing: 1945-05-28
•
Granted: 1949-08-23
•
Expires: 1965-05-28
Abstract
No abstract record available.
Inventors
- 👤 John J Ripich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:33
CPC Classifications
B; B22; B22D; B22D41/00; B22D41/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US612134A
Cited
US714804A
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US862008A
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US992599A
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US1573535A
Cited
US1633876A
Cited
US2173063A
Cited
US2224514A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-08-22 | 1953-02-21 | 1953-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-08-22 | 1957-02-21 | 1957-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-08-22 | 1961-02-21 | 1961-08-23 | $7700.00 | Window Closed / Lapsed |