US1461409A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Steel form for concrete construction
Assignee: TRUCSON STEEL Co
•
Filing: 1921-08-15
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Granted: 1923-07-10
•
Expires: 1941-08-15
Abstract
No abstract record available.
Inventors
- 👤 Herbert E White
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:05
CPC Classifications
E; E04; E04G; E04G11/00; E04G11/36; E04G11/40; E04G11/44; E04G17/00; E04G17/18
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) | 1926-07-09 | 1927-01-08 | 1927-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1930-07-09 | 1931-01-08 | 1931-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1934-07-09 | 1935-01-08 | 1935-07-10 | $7700.00 | Window Closed / Lapsed |