Hitch ball

Transportation – Parts – accessories and attachments for vehicles not... – Chassis element

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D03750655

REFERENCES:
patent: 4060331 (1977-11-01), Domer et al.
patent: 4596406 (1986-06-01), Van Vleet et al.
patent: 4889356 (1989-12-01), Morris
patent: 4938496 (1990-07-01), Thomas et al.
patent: 5085452 (1992-02-01), Janero
patent: 5158316 (1992-10-01), Hutchmacher
patent: 5395131 (1995-03-01), Herrick
patent: 5419576 (1995-05-01), Van Vleet
JC Whitney & Co Catalog No. 575C, p. 88, chromed on plain trailer hitch ball assemblies.
Drag Specialties Catalog, 1995, p. 11, the trailer ball.

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