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Patent US2444133A successfully refreshed from Google Patents.
US2444133A
Expired / Lapsed
US
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Building unit of generally right triangular form
Assignee: MID WEST WOOD PRODUCTS Co
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Filing: 1943-05-11
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Granted: 1948-06-29
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Expires: 1963-05-11
Abstract
No abstract record available.
Inventors
- 👤 Marshall O Groat
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:32
CPC Classifications
E; E04; E04C; E04C3/00; E04C3/02; E04C3/12; E04C3/14; E04B; E04B2/00; E04B2/02; E04B2/14; E04B2002/0297
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB126762A
Cited
US1347084A
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FR492878A
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FR21038E
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US1549205A
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US1628938A
Cited
US1779755A
Cited
US2065433A
Cited
US2207952A
Cited
US2215811A
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US2312994A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-06-29 | 1951-12-29 | 1952-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-06-29 | 1955-12-29 | 1956-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-06-29 | 1959-12-29 | 1960-06-29 | $7700.00 | Window Closed / Lapsed |