Before revision: One patent application has defined a modular propeller thus: "A modular propeller comprises a center hub with an integrated front cap and an aluminum core encapsulated with fiber-reinforced composite polymer resin.
After revision: Patent application -Stahl, B. patent 2006One patent application has defined a modular propeller thus: "A modular propeller comprises a center hub with an integrated front cap and an aluminum core encapsulated with fiber-reinforced composite polymer resin.