US3315995A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Column and beam connection
Assignee: United States Steel Corp
•
Filing: 1964-04-16
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Granted: 1967-04-25
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Expires: 1984-04-16
Abstract
No abstract record available.
Inventors
- 👤 Robert I Hossli
- 👤 Jr George D Ratliff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:12
CPC Classifications
E; E04; E04B; E04B1/00; E04B1/18; E04B1/24; E04B1/2403; E04B1/38; E04B1/58; E04B1/5806; E04B2001/2409; E04B2001/2454; Y; Y10; Y10T; Y10T403/00; Y10T403/70; Y10T403/7062; Y10T403/7064; Y10T403/71; Y10T403/7117
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1596360A
Cited
US1824631A
Cited
US2374550A
Cited
US2995223A
Cited
US3220518A
Cited
US3239070A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-04-24 | 1970-10-24 | 1971-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-04-24 | 1974-10-24 | 1975-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-04-24 | 1978-10-24 | 1979-04-25 | $7700.00 | Window Closed / Lapsed |