Patent Model - Calendar
Maker and role
Thomas Hovenden (Canadian), Patentee
Feb 21 1882
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6 1/2 x 11 x 4 1/4" (16.5 x 27.9 x 10.8cm)
Hovenden's patent "relates to perpetual calendars of that class in which the letters and figures which indicate the month and day of the week or month are carried on a moving surface and exposed to view at apertures." (Patent Number 254,015)
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