AU159356B2
(en )
1953-01-28
Improvements in or relating to telephone headsets and to adjustable earpads therefor
AU1433052A
(en )
1953-01-28
Improvements in or relating to telephone headsets and to adjustable earpads therefor
AU158719B2
(en )
1953-02-12
Improvements In or relating to operators telephone headsets
AU1476452A
(en )
1953-02-12
Improvements In or relating to operators telephone headsets
AU161958B2
(en )
1954-12-02
Improvements in or relating to telephone subscriber sets
AU164336B2
(en )
1953-07-16
Improvements in or relating to telephone headset assemblies
AU160170B2
(en )
Improvements in or relating to telephone and like coin collectors
AU886252A
(en )
1954-12-02
Improvements in or relating to telephone subscriber sets
AU156907B2
(en )
1952-05-01
Improvements In or relating to telephone signalling arrangements
AU155990B2
(en )
1953-11-05
Improvements in and relating to pulleys
AU209422B2
(en )
1955-09-29
Improvements in and relating to microphones
AU157448B2
(en )
1952-08-21
Improvements in or relating to voice frequency-signalling system
AU165515B2
(en )
1953-01-15
Improvements in and relating to transducers
AU1191952A
(en )
1953-08-06
Improvements in and relating to cloches
AU1822053A
(en )
1953-07-16
Improvements in or relating to telephone headset assemblies
AU160595B2
(en )
1953-07-16
Improvements in and relating to cultivators
AU154988B2
(en )
1952-06-05
Improvements in spectacles and spectacle-frames
AU211975B2
(en )
1956-06-07
Improvements in and relating to telephone handsets
AU160088B2
(en )
1953-07-02
Improvements in and relating to skullcaps
AU157806B2
(en )
1953-08-06
Improvements in and relating to cloches
AU826652A
(en )
1952-05-01
Improvements In or relating to telephone signalling arrangements
AU1456652A
(en )
1953-11-05
Improvements in and relating to pulleys
AU783955A
(en )
1955-09-29
Improvements in and relating to microphones
AU162712B2
(en )
1953-10-01
Improvements in pumps and associated accessories
AU165182B2
(en )
1952-12-18
Improvements in and relating to piezoelectric devices