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GB190812791A
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Improvements in Range Finders.
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GB190716719A
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Improvements in Electric Arc Lamps especially applicable for Signalling Purposes and as Searchlights.
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GB190516924A
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Improvements in Apparatus for Sighting Ordnance.
|
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US802929A
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Apparatus for setting the sights of guns.
|
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GB190410262A
|
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Improvements in Apparatus to be used in Setting the Sights of Guns.
|
|
GB190407307A
|
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Improvements in Apparatus for Adjusting the Sights of Ordnance and Small Arms.
|
|
GB190321786A
|
|
Improvements in Signalling and in Apparatus therefor.
|
|
GB190309129A
|
|
Improvements in Signalling and in Apparatus therefor.
|
|
GB190304258A
|
|
Improvements in Binocular Range Finders.
|
|
US727776A
|
|
Telescope.
|
|
GB190212422A
|
|
Improvements in Binocular and Monocular Telescopes.
|
|
US701190A
|
|
Range-finder.
|
|
GB190105267A
|
|
Improvements in Range Finders.
|
|
GB189912713A
|
|
Improvements in Aneroid Barometers.
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