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Old October 31, 2012, 02:04 PM   #6
Senior Member
Join Date: September 19, 2008
Posts: 4,678
Here's a 1966-vintage ad for the Bushnell product:

IIRC, the Tasco World Class product had the studs built into the bottom of the rings, with corresponding recepticles/holes in the bases.

The Bushnell system was different, as with the OP's mount, with the mount studs screwed directly into the receiver, and corresponding recepticles/holes in the bottom of the rings.

IMO, the Tasco was a workaround the Bushnell patent(s).


Last edited by PetahW; October 31, 2012 at 02:11 PM.
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