Inventor
PETERSON JOHN F
US5 patents
⚠️ This page may combine multiple inventors who share the name “PETERSON JOHN F”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HELIX TECH CORP
4 patentsUS4679401AJul 14, 1987
Temperature control of cryogenic systems
HELIX TECH CORP64 citations95
US4449373AMay 22, 1984
Reduced vacuum cryopump
HELIX TECH CORP41 citations91
US4446702AMay 8, 1984
Multiport cryopump
HELIX TECH CORP33 citations91
US4611467ASep 16, 1986
Method and apparatus for throttling gas flow to a cryopump
HELIX TECH CORP19 citations79