Tools and hardware – Fastener – support or mount not elsewhere specified – Fastener or coupling
Patent
1975-10-07
1977-07-26
Wertman, William N.
Tools and hardware
Fastener, support or mount not elsewhere specified
Fastener or coupling
D0808
Patent
active
D02451476
REFERENCES:
patent: D3883 (1870-03-01), Field
patent: 2397216 (1946-03-01), Stellin
patent: 2556155 (1951-06-01), Stellin
Design Fasteners Book, vol. 35, Mar. 21, 1963, p. 6, first column, Hexagon bolt item.
Kabushiki Kaisha Izumi Seisakusho
Wertman William N.
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