Patent US2201298A successfully refreshed from Google Patents.
US2201298A
Expired / Lapsed
US
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Method of making building blocks
Assignee: Individual
•
Filing: 1938-07-19
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Granted: 1940-05-21
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Expires: 1958-07-19
Abstract
No abstract record available.
Inventors
- 👤 Martin David
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:59
CPC Classifications
E; E04; E04C; E04C2/00; E04C2/30; B; B28; B28B; B28B23/00; B28B23/02; B28B23/028; B28B7/00; B28B7/0029; B28B7/0035; B28B7/0044; B28B7/0064; B28B7/0073; E04B; E04B2/00; E04B2/02; E04B2/28; E04B2/30; Y; Y10; Y10S; Y10S264/00; Y10S264/57
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1943-05-21 | 1943-11-20 | 1944-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-05-21 | 1947-11-20 | 1948-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-05-21 | 1951-11-20 | 1952-05-21 | $7700.00 | Window Closed / Lapsed |