Patent
1976-08-19
1978-07-11
Shapiro, Jacob
52671, 52674, E01G 500
Patent
active
040993868
ABSTRACT:
A shoring system provides trapezoidal pockets in modular plating units. The junction of planes in the trapezoids provides mechanical strength and deformation sites at which deformation can be seen.
REFERENCES:
patent: 447085 (1891-02-01), Sagendorph
patent: 514313 (1894-02-01), Eckstein
patent: 1726696 (1929-09-01), Dean
patent: 3224203 (1965-12-01), Brannfors et al.
patent: 3855801 (1974-12-01), Bernold
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