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GILFILLAN BROS

Overview
  • Total Patents
    37
About

GILFILLAN BROS has a total of 37 patent applications. Its first patent ever was published in 1951. It filed its patents most often in Canada and France. Its main competitors in its focus markets measurement, telecommunications and audio-visual technology are LENNEN GARY, SIGTEC NAVIGATION PTY LTD and NAVKOM TEKNOLODZHI INK.

Patent filings in countries

World map showing GILFILLAN BROSs patent filings in countries
# Country Total Patents
#1 Canada 23
#2 France 14

Patent filings per year

Chart showing GILFILLAN BROSs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Tasker Homer G 4
#2 Michels Lawrence 3
#3 Johnson Thomas J 2
#4 Shuler Martin H 2
#5 Davis Donovan C 2
#6 Tryon Robert M 2
#7 Stein Romar E 2
#8 Mccann Joe G 1
#9 Shaw Robert G 1
#10 Hiebert Alvin L 1

Latest patents

Publication Filing date Title
CA539640A Expanded radar display produced with logarithmic sweep
CA596447A Fast-acting bipolar sampling circuit
CA513142A Rejection of line interference
CA596444A Transmission of angular position signals
CA623528A Selectively operable strobe marking circuit
CA518259A Direct reading range mark circuit
CA500916A Radar antenna structure
CA539639A Expanded plan position indicator
CA710929A Radar scanning system
CA500165A Magnetic means for producing compensations and other effects in a cathode ray tube
CA596445A Cursor generator with a height finding adaptation
CA523461A Automatic amplitude cancellation in moving target indicator
CA521068A Relay system for radar data
CA596448A Variable range marking circuit with signal modulation for display identification
CA495398A Bridge type precision antenna structure
CA510352A Antiparallax mapping device
CA702024A Ground-controlled-approach radar system
CA521069A Automatic amplitude cancellation in moving target indicator
CA534051A Equalized fast time constant circuits for radar receivers
CA564511A Rotatable wave guide joint