US2611938A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machine for ramming foundry cores by means of compressed air
Assignee: Individual
•
Filing: 1949-10-15
•
Granted: 1952-09-30
•
Expires: 1969-10-15
Abstract
No abstract record available.
Inventors
- 👤 Hansberg Fritz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:27
CPC Classifications
B; B22; B22C; B22C15/00; B22C15/23; B22C15/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1086824A
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CH154245A
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US1950632A
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US2259768A
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US2300148A
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US2490559A
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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) | 1955-09-30 | 1956-03-31 | 1956-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-30 | 1960-03-31 | 1960-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-30 | 1964-03-31 | 1964-09-30 | $7700.00 | Window Closed / Lapsed |