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US993812A
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Manufacture of bifocal lenses.
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GB190719948A
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Improvements relating to Spectacles, Goggles, and the like.
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GB190714169A
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Improvements relating to Bifocal Lenses.
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GB190703798A
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Improvements relating to Respirators, Face Protectors, and the like.
|
|
GB190617531A
|
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An Improved Opera or Field Glass.
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GB190615605A
|
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Improvements in or relating to Binoculars.
|
|
GB190606913A
|
|
An Improvement in Goggles and the like.
|
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GB190504366A
|
|
An Improvement relating to Telescopes, Binoculars and like Glasses.
|
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GB190500932A
|
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Improvements relating to the Construction of Prismatic and other Binoculars and Telescopes.
|
|
GB190420164A
|
|
Improvements in Binocular Glasses.
|
|
GB190417426A
|
|
Improvements in Pince-nez and like Spectacles and Eye-glasses.
|
|
US784611A
|
|
Prismatic telescope, binocular, or the like.
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|
GB190307664A
|
|
Improvements relating to Binocular and like Glasses.
|
|
US765607A
|
|
Prismatic telescope, binocular, or the like.
|
|
GB190302363A
|
|
Improved Means for Focussing Opera, Field, Prismatic and other Binocular Glasses.
|
|
GB190226169A
|
|
Improvements in or relating to Prismatic Telescopes, Binoculars, and the like.
|
|
GB190211588A
|
|
A New or Improved Means or Apparatus for Testing Telescopes, Opera and Field Glasses, and the like.
|
|
GB190201443A
|
|
Improvements in the Manufacture or Construction of Field, Opera and other Binocular Glasses.
|
|
GB190007263A
|
|
Improvements in or connected with Goggles.
|
|
GB189923093A
|
|
Improvements in or relating to Pince-nez and analogous Eye-glasses and Spectacles.
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