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US4650324A
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Level Transit
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US4400068A
|
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Microfiche reader carrier assembly
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US4470643A
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Ball bearing and retainer therefor
|
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US4410248A
|
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Optical and focusing arrangement for microfiche reader
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US4379628A
|
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Folding transparency (microfiche) viewer
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US4341446A
|
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Microfiche reading carrel
|
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US4270850A
|
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Microimage storage and retrieval apparatus
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US4082466A
|
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Optical sighting instrument
|
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US4047806A
|
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Hand held microfiche viewer
|
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GB1528931A
|
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Optical projectors
|
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CA972593A
|
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Microfiche reader
|
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US3860333A
|
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Microfiche reader
|
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US3349509A
|
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Combined slide file box and viewer
|
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US3295811A
|
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Mount for riflescope
|
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US3464758A
|
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Riflescope with o-ring support and multiple lead fine threaded eyepiece
|
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US3194115A
|
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Dual slide projector with a single magazine
|
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US3085149A
|
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Miniature light source
|
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US2986830A
|
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Collapsible cardboard slide viewer
|
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US2958470A
|
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Device for moving irrigating units
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US2954623A
|
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Slide viewer operable on batteries or line voltage
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