US2550977A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Concrete block molding form
Assignee: Individual
•
Filing: 1947-04-08
•
Granted: 1951-05-01
•
Expires: 1967-04-08
Abstract
No abstract record available.
Inventors
- 👤 Bert F Dimock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:53
CPC Classifications
B; B28; B28B; B28B23/00; B28B23/0075; B28B23/0068; B28B7/00; B28B7/24; B28B7/241
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US522143A
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US753303A
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US796939A
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US818452A
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US878000A
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US1001288A
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US1547529A
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US1830225A
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US1905897A
Cited
US2198688A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-04-30 | 1954-10-30 | 1955-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-30 | 1958-10-30 | 1959-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-30 | 1962-10-30 | 1963-05-01 | $7700.00 | Window Closed / Lapsed |