Roof hatch
Latest Nystrom, Inc. Patents:
Claims
We claim the ornamental design for roof hatch, as shown.
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- SMS Ostfriesland Photograph, 1921, Indexed by National Archives and Records Administration 1946.
- Precision Ladders, LLC Brochure, Roof Hatches and Floor Doors, 2005, 4 pages.
Type: Grant
Filed: Dec 15, 2009
Date of Patent: Jul 20, 2010
Assignee: Nystrom, Inc. (Brooklyn Park, MN)
Inventors: Tom Ray (Little Canada, MN), John R. Chiodo (Columbia Heights, MN), Dean Loegering (Fridley, MN), Tom Sichak (Brooklyn Park, MN)
Primary Examiner: Doris Clark
Attorney: Patterson Thuente Christensen Pedersen, P.A.
Application Number: 29/351,999