US2581579A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Concrete products molding machine
Assignee: Gene Olsen Corp
•
Filing: 1948-09-28
•
Granted: 1952-01-08
•
Expires: 1968-09-28
Abstract
No abstract record available.
Inventors
- 👤 Robert O Davis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:01
CPC Classifications
B; B28; B28B; B28B5/00; B28B5/04; B28B13/00; B28B13/04; B28B13/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US625866A
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US830357A
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US930053A
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US2099946A
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US2366780A
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US2341012A
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US2431034A
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US2446061A
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US2464641A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-01-07 | 1955-07-09 | 1956-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-01-07 | 1959-07-09 | 1960-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-01-07 | 1963-07-09 | 1964-01-08 | $7700.00 | Window Closed / Lapsed |