US2926518A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reinforcement and form sheets for concrete
Assignee: Pittsburgh Steel Co
•
Filing: 1955-04-28
•
Granted: 1960-03-01
•
Expires: 1975-04-28
Abstract
No abstract record available.
Inventors
- 👤 Samuel P Finley
- 👤 Raymond A Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:26
CPC Classifications
E; E04; E04C; E04C5/00; E04C5/01; E04C5/06; E04B; E04B5/00; E04B5/16; E04B5/32; E04B5/36; E04B5/38; E04B5/40
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US782810A
Cited
US1872984A
Cited
US1943260A
Cited
US1967905A
Cited
FR850628A
Cited
US2484695A
Cited
FR1045020A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-03-01 | 1963-08-31 | 1964-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-01 | 1967-08-31 | 1968-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-01 | 1971-08-31 | 1972-03-01 | $7700.00 | Window Closed / Lapsed |