Sketchley v. Lipkin

Both parties have appealed from a decree enjoining defendants from exercising any right over a certain machine invented by plaintiff or from keeping, using or alienating the novel features or 'parts thereof on condition that plaintiff pay defendant Lipkin moneys assertedly invested by him in the construction of such machine.

Eor about 12 years preceding 1947, in connection with his plumbing business, plaintiff was engaged in inventing, constructing, and perfecting a machine for cleaning sewers and other subterranean conduits. While he had through the years discussed his device with his…