Patent US2562541A successfully refreshed from Google Patents.
US2562541A
Expired / Lapsed
US
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Concrete block molding machine
Assignee: Individual
•
Filing: 1946-05-18
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Granted: 1951-07-31
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Expires: 1966-05-18
Abstract
No abstract record available.
Inventors
- 👤 Flam John
- 👤 Flam Joseph
- 👤 Flam August
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:06
CPC Classifications
B; B28; B28B; B28B13/00; B28B13/04; B28B13/06; B28B1/00; B28B1/08; B28B1/087; B28B1/0873
Claims Analysis
Total Claims: 0
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US2343938A
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US2413109A
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US2341012A
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US2431034A
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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) | 1954-07-30 | 1955-01-29 | 1955-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-30 | 1959-01-29 | 1959-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-30 | 1963-01-29 | 1963-07-31 | $7700.00 | Window Closed / Lapsed |