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Terry Ryan fonds
Terry Ryan fonds
Ernest Wilmot Guptill fonds
Ernest Wilmot Guptill fonds
Correspondence with Commissioner of Patents re. E.W. Guptill's directive antennas for microwaves patents
Correspondence with Commissioner of Patents re. E.W. Guptill's directive antennas for microwaves patents
Correspondence re. E.W. Guptill's patent applications
Correspondence re. E.W. Guptill's patent applications
Correspondence re. E.W. Guptill's award/patent disputes
Correspondence re. E.W. Guptill's award/patent disputes