US2583597A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Concrete block molding machine
Assignee: American Aggregate Co
•
Filing: 1947-04-17
•
Granted: 1952-01-29
•
Expires: 1967-04-17
Abstract
No abstract record available.
Inventors
- 👤 Ryner Arthur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:21
CPC Classifications
B; B28; B28B; B28B23/00; B28B23/02; B28B23/028
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US799709A
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US1029559A
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US1258344A
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US1699017A
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US1770219A
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US2137759A
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US2201298A
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US2270829A
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US2268044A
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US2311479A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-01-28 | 1955-07-30 | 1956-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-01-28 | 1959-07-30 | 1960-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-01-28 | 1963-07-30 | 1964-01-29 | $7700.00 | Window Closed / Lapsed |