IP Library › Granted Patent US 567,829
Granted Patent S1
US 567,829 · App. 29/228,940 · Granted Apr 29, 2008

Refractory block

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Quick Facts
Patent No.
US 567,829
App. No.
29/228,940
Granted
Apr 29, 2008
Kind
S1
Claims (1)

The ornamental design for the refractory block, as shown as described.

Assignments (4)
MERGER Recorded May 18, 2023
From: HARBISON-WALKER REFRACTORIES COMPANY
To: APGI, LLC
Reel/Frame 063683/0631 →
MERGER Recorded May 18, 2023
From: APGI, LLC
To: A.P. GREEN REFRACTORIES, INC.
Reel/Frame 063683/0767 →
CHANGE OF NAME Recorded May 18, 2023
From: A.P. GREEN REFRACTORIES, INC.
To: HARBISONWALKER INTERNATIONAL, INC.
Reel/Frame 063692/0624 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Apr 29, 2005
From: STEPHANSKY, JOHN J.; BERRY, JOHN E.
To: HARBISON-WALKER REFRACTORIES COMPANY
Reel/Frame 016533/0180 →