US2593409A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Straight line block molding machine
Assignee: Bergen Machine & Tool Co
•
Filing: 1948-12-31
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Granted: 1952-04-22
•
Expires: 1968-12-31
Abstract
No abstract record available.
Inventors
- 👤 Jr Charles Kepler Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:32
CPC Classifications
B; B28; B28B; B28B1/00; B28B1/04; B28B1/045
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2470377A
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US866999A
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US2193879A
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US2270829A
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US2308132A
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US2398146A
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US2360122A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-04-22 | 1955-10-22 | 1956-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-22 | 1959-10-22 | 1960-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-22 | 1963-10-22 | 1964-04-22 | $7700.00 | Window Closed / Lapsed |