Patent US2667679A successfully refreshed from Google Patents.
US2667679A
Expired / Lapsed
US
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Apparatus for molding building blocks
Assignee: Individual
•
Filing: 1949-06-01
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Granted: 1954-02-02
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Expires: 1969-06-01
Abstract
No abstract record available.
Inventors
- 👤 Frederick H Jackman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:41
CPC Classifications
B; B28; B28B; B28B3/00; B28B3/02; B28B3/022
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US960958A
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US1280269A
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US2275676A
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US2366780A
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US2309033A
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US2319291A
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US2296562A
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US2311358A
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US2296453A
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US2505342A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-02-01 | 1957-08-03 | 1958-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-02-01 | 1961-08-03 | 1962-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-02-01 | 1965-08-03 | 1966-02-02 | $7700.00 | Window Closed / Lapsed |