04037563 is referenced by 132 patents and cites 2 patents.

A viewing window structure for an aquarium tank and the like includes a removable water pressure resistive viewing panel which presents a substantially uniform water-tight face to the water side thereof. The window structure comprises supporting seat means embedded in a tank wall adapted to receive the water encountering viewing panel. A flange of the supporting seat means is operative to sealably confront the water side of the window panel and to provide a substantially flush water-tight seal. Pressure retaining frame means and supporting hardware are provided on the dry side of the window panel.

Title
Aquarium viewing window
Application Number
5/671536
Publication Number
4037563
Application Date
March 29, 1976
Publication Date
July 26, 1977
Inventor
William A Hutcheson
San Francisco
CA, US
John M Pflueger
San Francisco
CA, US
Agent
Townsend and Townsend
Assignee
John M Pflueger
CA, US
IPC
A01K 64/00
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