Patent US2983983A successfully refreshed from Google Patents.
US2983983A
Expired / Lapsed
US
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Sectional mold for use in producing blocks of cementitious material
Assignee: Miami Stone Inc
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Filing: 1956-08-27
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Granted: 1961-05-16
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Expires: 1976-08-27
Abstract
No abstract record available.
Inventors
- 👤 George A Mayer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:32
CPC Classifications
B; B28; B28B; B28B5/00; B28B5/02; B28B5/021; B28B5/025; B28B7/00; B28B7/24; B28B7/241
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1261662A
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GB181038A
Cited
US1760283A
Cited
US1846290A
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DE814575C
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US2545029A
Cited
US2763909A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-15 | 1964-11-14 | 1965-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-15 | 1968-11-14 | 1969-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-15 | 1972-11-14 | 1973-05-16 | $7700.00 | Window Closed / Lapsed |