| http://www.w3.org/ns/prov#value | - No. 782,675 filed Mar. 30, 1977, entitled AIR SOURCE HEAT PUMP WITH MULTIPLE SLIDE ROTARY SCREW COMPRESSOR/EXPANDER, now U.S. Pat. No. 4,086,072 issuing Apr. 25, 1978, which in turn is a continuation-in-part application of application Ser.
|
