IP Library › Assignment 059779/0347
Patent Assignment
Reel/Frame 059779/0347

Change of Name

Recorded: 2022-04-21 Pages: 4
Assignor
ETAGEN, INC.
Executed: 2020-01-07
Assignee
MAINSPRING ENERGY, INC.
3601 HAVEN AVENUE, MENLO PARK, CALIFORNIA, 94025
Covered Property (1)
Control of Piston Trajectory in a Linear Generator
Application: 17/725,787 →
Publication: US 2022/0381192
Related Assignments (2)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignor's Interest Apr 21, 2022
From: ROELLE, MATTHEW; GADDA, CHRISTOPHER
To: ETAGEN, INC.
Reel/Frame 059664/0962 →
Security Interest Jun 6, 2025
From: MAINSPRING ENERGY, INC.
To: AVENUE VENTURE OPPORTUNITIES FUND II, L.P., AS AGENT
Reel/Frame 071499/0428 →