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Patents for Hilger & Watts, Ltd.
Patents 1 - 9 of 9
First set of recordsLast set of records
PictureNumberDatePatenteeTitle
  2,480,237Aug. 30, 1949V.W. Towns, C.J. GodfreyOptical Device for Accurate Reading of Annular Scales
  2,483,897Oct. 04, 1949C.J. GodfreyOptical Precision Gauge
  2,505,166Apr. 25, 1950A. WoodSpirit Level
  2,604,229Jul. 22, 1952E. SchwarzClosure Seal for Vacuum Vessels
  2,636,855Apr. 28, 1953E. SchwarzMethod of Producing Photoconductive Coatings
  2,639,833May 26, 1953E. SchwarzVacuum Seal
  2,717,401Sep. 13, 1955W. Zehden, G.E. Fensom, A.C. MenziesDevice for Cutting Very Fine Screw Threads
  2,853,664Sep. 23, 1958P.L. Jones, D.S. Evans, V.W. TownsDigital Servosystem for Postioning an Adjustable Member
2,981,141Apr. 25, 1961D.W. Berry, J.A. ArmstrongOptical Compensator and Tilt Detector
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