Optical furnace
Description
The broken lines shown represent the portions of the optical furnace that form no part of the claimed design.
Claims
The ornamental design for an optical furnace, as shown and described.
Referenced Cited
U.S. Patent Documents
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Patent History
Patent number: D902841
Type: Grant
Filed: May 3, 2018
Date of Patent: Nov 24, 2020
Inventors: Gary Cook (Beavercreek, OH), Jackie Barnes (Vandalia, OH)
Primary Examiner: Derrick E Holland
Application Number: 29/646,276
Type: Grant
Filed: May 3, 2018
Date of Patent: Nov 24, 2020
Inventors: Gary Cook (Beavercreek, OH), Jackie Barnes (Vandalia, OH)
Primary Examiner: Derrick E Holland
Application Number: 29/646,276
Classifications
Current U.S. Class:
Energy Conversion Or Transformation (D13/101)