Inventor
VAN DER SANDE JOHANNES H M
NL3 patents
Patents
3 patentsUS4970431ANov 13, 1990
High-pressure sodium discharge lamp with fins radially extending from the discharge vessel for controlling the wall temperature of the discharge vessel
PHILIPS CORP27 citations89
US4409517AOct 11, 1983
High-pressure discharge lamp with envelope lead-through structure
PHILIPS CORP40 citations87
US5097176AMar 17, 1992
High-pressure sodium discharge lamp having a color temperature of at least 2800° K.
PHILIPS CORP12 citations69