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Patent US2481654A successfully refreshed from Google Patents.
US2481654A
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US
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Mold clamping and pouring system
Assignee: National Engineering Co
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Filing: 1944-06-29
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Granted: 1949-09-13
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Expires: 1964-06-29
Abstract
No abstract record available.
Inventors
- 👤 George W Fuller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 01:20
CPC Classifications
B; B22; B22D; B22D33/00; B22D33/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US781356A
Cited
US1339133A
Cited
US1347552A
Cited
US1421305A
Cited
FR566018A
Cited
US1801574A
Cited
US2154967A
Cited
US2347013A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-09-12 | 1953-03-14 | 1953-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-09-12 | 1957-03-14 | 1957-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-09-12 | 1961-03-14 | 1961-09-13 | $7700.00 | Window Closed / Lapsed |