Keywords: Robert Stirling's engine patent.gif en Illustration to Robert Stirling's 1816 patent application of the heat engine which later came to be known as the Stirling Engine http //www cse iitk ac in/~amit/courses/371/abhishe/18pat gif Indian Institute of Technology copy of image in Robert Stirling's patent of 1816 1816 thumb retouched PD-old Stirling engines Robert Stirling |