Canadian Patents Database / Patent 839975 Summary

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(12) Patent: (11) CA 839975
(52) Canadian Patent Classification (CPC):
  • 328/198
  • 328/33
  • 333/85
(51) International Patent Classification (IPC):
  • H03H 11/24 (2006.01)
(72) Inventors (Country):
  • KENETH A. SIMONS (Country Unknown)
  • GEORGE DUTY (Country Unknown)
(73) Owners (Country):
(71) Applicants (Country):
(74) Agent: NA
(45) Issued: 1970-04-21
(22) Filed Date:
(30) Availability of licence: N/A
(30) Language of filing: English

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Title Date
(45) Issued 1970-04-21
Expired 1987-04-21

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Number of pages Size of Image (KB)
Claims 1994-09-30 4 205
Description 1994-09-30 8 375
Drawings 1994-09-30 2 41