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US3000298A
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Printing by diazotization
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Paper feeding mechanism
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Punching register
|
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Method of making platen rolls
|
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Form bursting and stacking apparatus
|
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Paper feeding mechanism
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Safety paper
|
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Nontransfer manifolding material
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Paper feeding mechanism
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Feeding means for recording machines
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Sheet aligning and locating means for writing machines
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Split platen
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Dual pinwheel feed
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Pinwheel feed
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Writing machine
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Motorized carbon shifter
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Strip dispensing apparatus
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US2072136A
|
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Strip dispensing apparatus
|
|
US2116545A
|
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Manifolding attachment
|
|
US2072135A
|
|
Portable register
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