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492,363 · Pennycuick · "Skylight" · Page 2 Home  > Prism Glass  > Patent Index  > Page 2

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of ribs or projections each forming an obtuse scalene triangle in cross section, one side of which projects at an angle of about forty-five degrees and the other side at an angle of about one hundred and five degrees from the plane of the top surface substantially as and for the purposes set forth.

In testimony whereof I affix my signature in the presence of two witnesses. JAMES G. PENNYCUICK. Witnesses:     H. P. DOOLEY,     E. M. DOOLEY.