A laminar diaphragm (16) for use in a pressure transducer (10) comprised of two or more layers (50, 52, 54). The pressure boundary membrane (50) free of machining defects is supported by one or more support members (52, 54) having a fluid passage therethrough (56, 58). The support members (52, 54) are...http://www.google.ca/patents/US4676108?utm_source=gb-gplus-sharePatent US4676108 - Multilayer diaphragm for pressure transducer
