Patent for improvements in pistons for pneumatic pumps by using a combination of a tubular shell, a cylindrical valve, a conical aperture and a conical projection to fulfill the conditions required of a piston in pumps. Illustration is included.
Patent for a cotton-chopper meant to be the most simply constructed. The hoes are attached to a rotating cylinder in the center of the frame, and the hoes rotating is what chops the cotton.
Patent for an envelop seal composed of a metal piece with two arms, which are threaded through a hole in the envelop and pressed down into the sticky gum surface on the inside of the envelop flap.
Document issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, Price Daniel, regarding a legal question submitted for clarification: Authority of Prison Board to direct general manager to permit the use of inmate labor on sewage project with the City of Huntsville.
This dialog allows you to filter your current search.
Each of the Years listed note their name and the number of records that will be limited down to if you choose that option.
The list can be sorted by name or the count.