User:Gtorrisi/homework3.html
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Patent in Question:
Clamp for Vibrating Shank Plows patent number 2,627,798
Prior Art:
Glencoe Clamp patent number 2,739,518
Vibrating Plow and Mounting Therefor patent number 2,493,811
Obvious
In light of the prior art of both Graham and Glencoe (listed above), Graham's new patent, no. '798, is obvious.
