Powder sifter
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Description
Any dash-dash broken lines illustrate portions of the powder sifter that form no part of the claimed design.
The diagonal shading represents a transparent or translucent appearance.
Claims
The ornamental design for a powder sifter, as shown and described.
Referenced Cited
U.S. Patent Documents
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Patent History
Patent number: D978931
Type: Grant
Filed: Jan 24, 2022
Date of Patent: Feb 21, 2023
Assignee: Formlabs, Inc. (Somerville, MA)
Inventors: Yoav Reches (Cambridge, MA), John E. Ouchterlony (Cambridge, MA), Brian Chan (Cambridge, MA), Kat Ely (Somerville, MA), Adam Lebovitz (Cambridge, MA)
Primary Examiner: Calvin E Vansant
Assistant Examiner: Mark T. Philipps
Application Number: 29/824,278
Type: Grant
Filed: Jan 24, 2022
Date of Patent: Feb 21, 2023
Assignee: Formlabs, Inc. (Somerville, MA)
Inventors: Yoav Reches (Cambridge, MA), John E. Ouchterlony (Cambridge, MA), Brian Chan (Cambridge, MA), Kat Ely (Somerville, MA), Adam Lebovitz (Cambridge, MA)
Primary Examiner: Calvin E Vansant
Assistant Examiner: Mark T. Philipps
Application Number: 29/824,278
Classifications
Current U.S. Class:
Material Working, Abrading, Or Founding Machinery (D15/122);
Miscellaneous (D15/199)