AIRCRAFT production engineers have long sought detailed information regarding the laminated wood construction process which has been under development for a number of years by the Duramold division of the Fairchild Engine and Airplane Corp. for production of the company's AT‐21 advanced trainer and PT‐19 Army patrol‐torpedo planes. This information has been made generally available, however, only since the end of 1943, after success of the development had been proved not only experimentally but in production operations of considerable volume.
Wilkin Perry, H. (1944), "High Frequency Bonding of Laminated Wood: The Duramold Process of Utilizing Electronic Diathermic Waves", Aircraft Engineering and Aerospace Technology, Vol. 16 No. 5, pp. 147-149. https://doi.org/10.1108/eb031128
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