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In 1879, Auguste Bartholdi received design patent number 11,023 titled "Design for a Statue". It was for the Statue of Liberty.
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| Number | Title | Issue Date |
| 5315962 | Valves for a duct, and two-stroke combustion engine incorporating the valves Rotating valves are set forth especially for use in two stroke internal combustion engines. The valve has two rotating parts which come into tangential pseudocontact with each other. Each rotating part has a solid surface of revolution which closes off fl... | 05/31/1994 |
| 5081961 | Internal combustion engine with rotary exhaust control A rotary commutator valve that is located at the exhaust ports of the cylinder of an internal combustion, reciprocal engine for regulating the flow of exhaust and allowing the exhaust ports to be sequentially utilized as supplementary intake ports for cha... | 01/21/1992 |
| 4169434 | Internal combustion engine with stepped piston supercharger A reciprocating piston four cycle internal combustion engine utilizes a stepped piston the stepped portion of which, working in an enlarged bore in the block, serves as a compressor to provide a supercharged fuel-air mixture to the combustion chamber. The... | 10/02/1979 |
| 4036184 | Stratified charge engine An apparatus for applying a stratified charge to a reciprocating internal combustion engine is disclosed. The apparatus comprises a cylindrical rotary valve body disposed for rotation within the head of an internal combustion engine. The valve body define... | 07/19/1977 |
| 4019488 | Rotary valve engine with lubricator A rotary valve engine in which the rotary valve is located laterally of the cylinder and includes straight longitudinally extending, concentrically arranged intake and exhaust passages for unrestricted flow of air or combustible mixture into the cylinder ... | 04/26/1977 |
