Manual calculating device

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Description

FIG. 1 is a perspective view of a manual calculating device, showing my new design;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a top elevation view thereof, the bottom elevation view being a mirror image thereof; and,

FIG. 5 is a right side elevation view thereof, the left side elevation view being a mirror image thereof.

The broken lines are directed to environment and form no part of the claimed design.

The stippled shading is meant to indicate a contrast in appearance between the remainder of the manual calculating device.

Claims

The ornamental design for a manual calculating device, as shown and described.

Referenced Cited
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20170102729 April 13, 2017 Ylitalo
Foreign Patent Documents
2849936 April 2005 FR
Other references
  • YouTube. Link: https://www.youtube.com/watch?v=3gjDfc2AF3w. Aug. 1, 2008. Napier's Bones. (Year: 2008).
  • Low-Tech Magazine. Link: https://www.lowtechmagazine.com/2008/05/computers-antiq.html. May 2008. Mechanical calculators: computing without electricity. (Year: 2008).
Patent History
Patent number: D921109
Type: Grant
Filed: Mar 24, 2020
Date of Patent: Jun 1, 2021
Inventor: Dale Ylitalo (Cokato, MN)
Primary Examiner: Lauren D McVey
Application Number: 29/729,100