Lift assistance device
Description
The broken lines shown in the drawings show unclaimed subject matter and also environment that form no part of the claimed design.
Claims
The ornamental design for a lift assistance device, as shown.
Referenced Cited
Patent History
Patent number: D872964
Type: Grant
Filed: May 9, 2018
Date of Patent: Jan 14, 2020
Inventor: Manuel Parks (Santa Clara, CA)
Primary Examiner: Randall H Gholson
Application Number: 29/647,119
Type: Grant
Filed: May 9, 2018
Date of Patent: Jan 14, 2020
Inventor: Manuel Parks (Santa Clara, CA)
Primary Examiner: Randall H Gholson
Application Number: 29/647,119
Classifications
Current U.S. Class:
Conveying, Lifting, Or Transferring Article (D34/28)