INTENSITRON
Filed: June 3, 1991
earthquake instrument that measures and displays intensity in addition to activating audible alarms
Owned by: Engdahl, Paul D.
Serial Number: 74172645
UTILITRON
Filed: June 3, 1991
earthquake instrument that measures and displays intensity in addition to activating audible alarms and operating utility…
Owned by: Engdahl, Paul D.
Serial Number: 74172646
ENGDAHL SCALE (ES)
Filed: June 3, 1991
electronic measuring apparatus which measures earthquake intensity
Owned by: Engdahl, Paul D.
Serial Number: 74172647
ACCELATRON
Filed: January 6, 1992
electronic measuring apparatus which measures earthquake acceleration
Owned by: Engdahl, Paul D.
Serial Number: 74235260
COMPUTRON
Filed: June 15, 1992
electronic printed circuit board and software to accept and reduce earthquake instrumental data for further processing by…
Owned by: Engdahl, Paul D.
Serial Number: 74284977
RAMTRON
Filed: June 22, 1992
random access memory storage device for storing digital data in the nature of earthquake accelerations for subsequent retrieval…
Owned by: Engdahl, Paul D.
Serial Number: 74286987
