Patent US2123923A successfully refreshed from Google Patents.
US2123923A
Expired / Lapsed
US
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Joist
Assignee: Individual
•
Filing: 1937-10-18
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Granted: 1938-07-19
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Expires: 1957-10-18
Abstract
No abstract record available.
Inventors
- 👤 Edward P Alsted
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:52
CPC Classifications
E; E04; E04C; E04C3/00; E04C3/02; E04C3/04; E04C3/06; E04C3/07; E04B; E04B5/00; E04B5/16; E04B5/17; E04B5/23; E04B5/29; E04B5/32; E04B5/36; E04B5/38; E04B5/40; E04C2003/0404; E04C2003/0408; E04C2003/0421; E04C2003/0426; E04C2003/0434; E04C2003/0443; E04C2003/0473
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) | 1941-07-18 | 1942-01-17 | 1942-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1945-07-18 | 1946-01-17 | 1946-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1949-07-18 | 1950-01-17 | 1950-07-19 | $7700.00 | Window Closed / Lapsed |