TRICO adjustable wiper arm pat# CAN 1942, 48, 52

[oldtools]

Think it belongs to a Chevy, all Stainless, adjustable length 11" to 15", also adjustable tip ~300 deg. ~9/16 dia post.
couldn't find any of the 9ea patent # printed on the arm.

[geneg]

It is an aftermarket  "universal arm.  The angle adjustment is for the resting position.  The curved end blade mount ended in 53 for GM trucks.  54 was the 1st year for curved windshields & the wipers changed accordingly.  Fricken wiper may have more info  if you need it. wiperman.com

[oldtools]

Thank you, very informative..