US2798265A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for making shell molds
Assignee: NEWARK PATTERN WORKS Inc
•
Filing: 1952-08-07
•
Granted: 1957-07-09
•
Expires: 1972-08-07
Abstract
No abstract record available.
Inventors
- 👤 Ernest H Rubovitz
- 👤 Charles G Keller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:14
CPC Classifications
B; B22; B22C; B22C23/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1337780A
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US2542243A
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US2495960A
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GB703749A
Cited
DE832936C
Cited
US2630608A
Cited
US2659945A
Cited
US2659944A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-08 | 1961-01-07 | 1961-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-08 | 1965-01-07 | 1965-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-08 | 1969-01-07 | 1969-07-09 | $7700.00 | Window Closed / Lapsed |