AU118939A - Improvements in or relating to echo sounding recorders - Google Patents

Improvements in or relating to echo sounding recorders

Info

Publication number
AU118939A
AU118939A AU1189/39A AU118939A AU118939A AU 118939 A AU118939 A AU 118939A AU 1189/39 A AU1189/39 A AU 1189/39A AU 118939 A AU118939 A AU 118939A AU 118939 A AU118939 A AU 118939A
Authority
AU
Australia
Prior art keywords
recorders
relating
echo sounding
sounding
echo
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
AU1189/39A
Other versions
AU110176B2 (en
Inventor
Pullen Hinton Horman
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BAE Systems Electronics Ltd
Original Assignee
Marconis Wireless Telegraph Co Ltd
Filing date
Publication date
Application filed by Marconis Wireless Telegraph Co Ltd filed Critical Marconis Wireless Telegraph Co Ltd
Application granted granted Critical
Publication of AU118939A publication Critical patent/AU118939A/en
Publication of AU110176B2 publication Critical patent/AU110176B2/en
Expired legal-status Critical Current

Links

AU1189/39A 1939-03-17 Improvements in or relating to echo sounding recorders Expired AU110176B2 (en)

Publications (2)

Publication Number Publication Date
AU118939A true AU118939A (en) 1940-04-04
AU110176B2 AU110176B2 (en) 1940-04-04

Family

ID=

Similar Documents

Publication Publication Date Title
AU110176B2 (en) Improvements in or relating to echo sounding recorders
AU118939A (en) Improvements in or relating to echo sounding recorders
AU109950B2 (en) Improvements in or relating to echo sounding apparatus
AU92539A (en) Improvements in or relating to echo sounding apparatus
AU111315B2 (en) Improvements in or relating to warning horns
AU111847B2 (en) Improvements in or relating to magneto-strictive echo sounding apparatus
AU479139A (en) Improvements in or relating to warning horns
AU110834B2 (en) Improvemetns in or relating to vibrator heads
AU110105B2 (en) Improvements in or relating to pulverisers
AU110106B2 (en) Improvements in or relating to pulverisers
AU110108B2 (en) Improvements in or relating to pulverisers
AU111709B2 (en) Improvements in or relating to radio-receivers
AU495439A (en) Improvements in or relating to magneto-strictive echo sounding apparatus
AU110965B2 (en) Improvements in or relating to sound locator apparatus
AU112493B2 (en) Improvements in or relating to signal receivers
AU107513B2 (en) Improvements in or relating to acoustic reproducer arrangements
AU111091B2 (en) Improvements in or relating to electrically operable indicators
AU110262B2 (en) Improvements in or relating to vehicles
AU112700B2 (en) Improvements in and relating to echo sounding apparatus
AU110259B2 (en) Improvements in or relating to resonant lines
AU109136B2 (en) Improvements in or relating to signal receivers for telephony purposes
AU111204B2 (en) Improvements in or relating to microphones
AU110407B2 (en) Improvements in or relating to microphones
AU112027B2 (en) Improvements in or relating to absorption-refrigerating systems
AU112250B2 (en) Improvements in or relating to synchronizing signal generators