03994093 is referenced by 18 patents and cites 3 patents.

In a window whose sash may be swung in the window frame about hinges having a vertical axis or tilted in bearings about a horizontal axis, the sash and frame have dovetail grooves in which the hinge and bearing elements and other fittings can be installed by means of conforming mounting portions without tools or with simple hand tools.

Title
Window with sash capable of pivoting movement about two perpendicular axes
Application Number
5/581777
Publication Number
3994093
Application Date
May 29, 1975
Publication Date
November 30, 1976
Inventor
Paul Greisner
Telgte
DT
Siegfried Mayer
Wolbeck
DT
Agent
Hans Berman
Assignee
Aug Winkhaus
DT
IPC
E05D 15/52
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