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GB936517A
|
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Improvements in or relating to spirit level assemblies
|
|
GB926683A
|
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Stereoscopic microscope
|
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GB910291A
|
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Improvements in or relating to a microscope objective
|
|
GB904147A
|
|
Improvements in surveyor's levels
|
|
GB877813A
|
|
Improvements in or relating to change-ratio gearing motion translating devices
|
|
DE1127598B
|
|
Optical instrument
|
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US3101412A
|
|
Spore growth prevention in optical instruments
|
|
GB866437A
|
|
Improvements in or relating to microscopes
|
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GB835422A
|
|
Improvements in or relating to optical instruments
|
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GB773792A
|
|
Improvements in or relating to microscopes
|
|
GB767827A
|
|
Improvements in or relating to eye-pieces for microscopes, telescopes and other optical instruments
|
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GB755955A
|
|
Improvements in or relating to microscope objectives
|
|
GB761063A
|
|
Improvements in or relating to microscopes
|
|
GB717088A
|
|
Improvements in photomicrographic apparatus
|
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GB721602A
|
|
Improvements in microscopes
|
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GB718440A
|
|
Improvements in polarizing microscopes
|
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GB713171A
|
|
Improvements in microscopy
|
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GB695297A
|
|
Improvements in microscope objectives
|
|
GB652195A
|
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Improvements in phase-contrast microscopy
|
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GB637144A
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Improvements in or relating to optical instruments for measuring distances and heights
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