US2893079A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shell mold machine and method
Assignee: PORTAL PRODUCTS Corp
•
Filing: 1955-01-21
•
Granted: 1959-07-07
•
Expires: 1975-01-21
Abstract
No abstract record available.
Inventors
- 👤 Joseph I Moran
- 👤 William E Bopp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 22:27
CPC Classifications
B; B22; B22C; B22C23/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2659944A
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US2691195A
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US2751645A
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US2746104A
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US2724158A
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US2778074A
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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) | 1962-07-06 | 1963-01-05 | 1963-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-07-06 | 1967-01-05 | 1967-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-07-06 | 1971-01-05 | 1971-07-07 | $7700.00 | Window Closed / Lapsed |