Patent US2944641A successfully refreshed from Google Patents.
US2944641A
Expired / Lapsed
US
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Wall construction
Assignee: Individual
•
Filing: 1954-12-06
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Granted: 1960-07-12
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Expires: 1974-12-06
Abstract
No abstract record available.
Inventors
- 👤 Gerald D Peterson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:08
CPC Classifications
E; E04; E04B; E04B2/00; E04B2/88; E04B2/96
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1962201A
Cited
US2230348A
Cited
US2384859A
Cited
US2347756A
Cited
US2393770A
Cited
US2583599A
Cited
US2655238A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-07-12 | 1964-01-11 | 1964-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-12 | 1968-01-11 | 1968-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-12 | 1972-01-11 | 1972-07-12 | $7700.00 | Window Closed / Lapsed |