Pen recorder housing

Office supplies; artists and teachers materials – Equipment for writing – drawing – or for fine arts – Plural or combined

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Details

D19 48, D19 51, D19 56, 401195

Patent

active

D03646416

REFERENCES:
patent: D80646 (1930-03-01), Thomas et al.
patent: D159247 (1950-07-01), Bodor
patent: D191554 (1961-10-01), Bodor
patent: D314978 (1991-02-01), Oka
patent: D355932 (1995-02-01), Beffa
patent: D356113 (1995-03-01), Maggio
patent: 4541630 (1985-09-01), Dirks
patent: 4763355 (1988-08-01), Cox
patent: 5313557 (1994-05-01), Osterhout
patent: 5368406 (1994-11-01), Hanshaw

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