US2864134A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Core blowing machine
Assignee: Individual
•
Filing: 1955-01-27
•
Granted: 1958-12-16
•
Expires: 1975-01-27
Abstract
No abstract record available.
Inventors
- 👤 Charles R Harrison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:44
CPC Classifications
B; B22; B22C; B22C23/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US234263A
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US244943A
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US1544261A
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DE557503C
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FR779926A
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US2598621A
Cited
US2556618A
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US2524447A
Cited
US2636230A
Cited
US2661513A
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US2761186A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-12-15 | 1962-06-16 | 1962-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-15 | 1966-06-16 | 1966-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-15 | 1970-06-16 | 1970-12-16 | $7700.00 | Window Closed / Lapsed |