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US4135245A
(en)
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Plotter with automatic pen-changer
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US4401996A
(en)
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Apparatus for recording-pen interchange
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US2125345A
(en)
|
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Multiple-recording instrument
|
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US2412639A
(en)
|
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Electrocardiograph
|
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US2191673A
(en)
|
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Printing mechanism for multiplerecord recorders
|
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US1820088A
(en)
|
|
Recording apparatus
|
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US2454966A
(en)
|
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Heated stylus inkless recorder
|
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US2425080A
(en)
|
|
Plural magnitude recoedek |
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US2082591A
(en)
|
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Recorder print wheel
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US2674513A
(en)
|
|
Industrial recording mechanism
|
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US2743986A
(en)
|
|
Industrial multi-record system
|
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US4489333A
(en)
|
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Device for exchanging objects in particular writing instruments
|
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US2976103A
(en)
|
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Character printing graphical recorder
|
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US4172258A
(en)
|
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Multicolor multipoint recorder
|
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US3351949A
(en)
|
|
Point plotting graphic recorder
|
|
US1564558A
(en)
|
|
Recording instrument
|
|
US2331205A
(en)
|
|
Graphic measuring device
|
|
US2315348A
(en)
|
|
Stylus conditioning apparatus
|
|
US3161456A
(en)
|
|
Multiple channel chart recorder
|
|
US3196449A
(en)
|
|
Apparatus for providing a series of simultaneously recorded groups of test result records
|
|
US2746835A
(en)
|
|
Oscillographs
|
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US2920930A
(en)
|
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Multi-curve recorder
|
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US2674514A
(en)
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|
Attachment for kymographs
|
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US923606A
(en)
|
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Recorder for electrical measuring instruments.
|
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US1418183A
(en)
|
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Graphic recorder
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