US2560722A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Concrete block molding machine
Assignee: CHARLES L PROPST
•
Filing: 1948-01-28
•
Granted: 1951-07-17
•
Expires: 1968-01-28
Abstract
No abstract record available.
Inventors
- 👤 William V Godefroid
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 01:21
CPC Classifications
B; B28; B28B; B28B7/00; B28B7/16; B28B7/18; B28B7/183
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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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) | 1954-07-16 | 1955-01-15 | 1955-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-16 | 1959-01-15 | 1959-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-16 | 1963-01-15 | 1963-07-17 | $7700.00 | Window Closed / Lapsed |