Patent US3566567A successfully refreshed from Google Patents.
US3566567A
Expired / Lapsed
US
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Concrete load supporting structure
Assignee: Individual
•
Filing: 1969-07-25
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Granted: 1971-03-02
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Expires: 1989-07-25
Abstract
Abstract A CONCRETE LOAD SUPPORTING STRUCTURE OF THE TYPE WHICH COMPRISES A PLURALITY OF RELATIVELY SLENDER BEAMS SUPPORTED ON GIRDERS, THESE BEAMS BEING SPACED AND HELD IN PLACE BY SPACER STRIPS WHEREBY THE BEAMS ARE PROTECTED FROM BECOMING BUCKLED UNDER THE INFLUENCE OF A CONCRETE LOAD.
Inventors
- 👤 Yoshiro Watanabe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 11:46
CPC Classifications
E; E04; E04B; E04B5/00; E04B5/16; E04B5/17; E04B5/23; E04B5/29; E04B5/32; E04B5/36; E04B5/38; E04B5/40
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) | 1974-03-01 | 1974-08-31 | 1975-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-01 | 1978-08-31 | 1979-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-01 | 1982-08-31 | 1983-03-02 | $7700.00 | Window Closed / Lapsed |