Signals and indicators – Street traffic – Portable
Patent
1975-12-22
1977-09-27
Swisher, S. Clement
Signals and indicators
Street traffic
Portable
404 6, E01F 901, E01F 910
Patent
active
040504018
ABSTRACT:
A barricade system for erection in a jiffy comprises various interchangeable components for quickly and easily making up a barricade appropriate to the immediate situation.
REFERENCES:
patent: 3119588 (1964-01-01), Keats
patent: 3380428 (1968-04-01), Abrams
patent: 3380429 (1968-04-01), Moinicken
Corr Denis E.
Jacobson Harvey B.
McCullough Wanda
O#Brien Clarence A.
Swisher S. Clement
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