IP Library › Granted Patent US 897,517
Granted Patent S1
US 897,517 · App. 29/645,343 · Granted Sep 29, 2020

Air filter

Inventors: Christopher Wolf (Brown Deer, WI); Eric B. Hudak (Sheboygan, WI); Michelle Formanek (Sheboygan, WI); Michael E. Smies (Waldo, WI)
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Quick Facts
Patent No.
US 897,517
App. No.
29/645,343
Granted
Sep 29, 2020
Kind
S1
Claims (1)

The ornamental design for an air filter, as shown and described.

Assignments (4)
PATENT SECURITY AGREEMENT (ABL) Recorded May 3, 2024
From: CURTIS INSTRUMENTS, INC.; DISCOVERY ENERGY, LLC; HEILA TECHNOLOGIES, INC.
To: BANK OF AMERICA, N.A., AS COLLATERAL AGENT
Reel/Frame 067306/0903 →
PATENT SECURITY AGREEMENT (TERM) Recorded May 2, 2024
From: CURTIS INSTRUMENTS, INC.; DISCOVERY ENERGY, LLC; HEILA TECHNOLOGIES, INC.
To: BANK OF AMERICA, N.A, AS COLLATERAL AGENT
Reel/Frame 067290/0853 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded May 1, 2024
From: KOHLER CO.
To: DISCOVERY ENERGY, LLC
Reel/Frame 067289/0516 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Apr 25, 2018
From: WOLF, CHRISTOPHER; HUDAK, ERIC B.; FORMANEK, MICHELLE; SMIES, MICHAEL E.
To: KOHLER CO.
Reel/Frame 045634/0048 →