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US4323825A
|
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Deflection system with positive feedback
|
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US4263649A
|
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Computer system with two busses
|
|
US4181933A
|
|
Memory access and sharing control system
|
|
US4189998A
|
|
Print hammer and interposer captivating linkage
|
|
US4119953A
|
|
Timesharing programmable display system
|
|
US4083100A
|
|
Method of manufacturing a keyboard assembly
|
|
US4106406A
|
|
Print hammer apparatus
|
|
US4033030A
|
|
Method of manufacturing keyswitch assemblies
|
|
US4053937A
|
|
Calibration timing bands
|
|
US3977620A
|
|
Reversible drive for flexible web
|
|
US4018155A
|
|
Ballistic print hammer assembly
|
|
US4018999A
|
|
Keyboard switch assembly having adhesive position retainer element
|
|
US3999747A
|
|
Record card feeding apparatus
|
|
US3908109A
|
|
Dome shaped switch member
|
|
GB1470584A
|
|
Apparatus and method for making a metal print drum
|
|
US3873843A
|
|
Document detection apparatus
|
|
US3869698A
|
|
Optical character recognition video amplifier and digitizer
|
|
US3898545A
|
|
Motor control circuit
|
|
US3850097A
|
|
High speed printers with staggered fonts
|
|
CA928639A
|
|
Control for chain printer
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