US1406723A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Joist hanger
Assignee: UNITED ALLOY STEEL Corp
•
Filing: 1920-04-03
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Granted: 1922-02-14
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Expires: 1940-04-03
Abstract
No abstract record available.
Inventors
- 👤 William L Caldwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:15
CPC Classifications
E; E04; E04B; E04B1/00; E04B1/18; E04B1/26; E04B1/2604; E04B1/2608; F; F16; F16B; F16B9/00; F16B9/05; F16B9/052; F16B9/058; F16B2200/00; F16B2200/50; F16B2200/503
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) | 1925-02-13 | 1925-08-15 | 1926-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1929-02-13 | 1929-08-15 | 1930-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1933-02-13 | 1933-08-15 | 1934-02-14 | $7700.00 | Window Closed / Lapsed |