Egbert v. Lippmann

BLATCHFORD, District Judge.

The patent in this case was applied for in March, I860. The answer sets up, as a defence, that, more titan two years before such application, the invention was known and in use in the United States. The bill alleges, that, at the time of the application, the invention had not been, for more than two years, in public use, with the consent or allowance of the patentee. The answer denies that, at the time of the application, the invention had not been, for more than two years, in public use. After the defendants had introduced evidence for the purpose of showing that…