Air diffuser with multiple layer disk

Details Air diffuser with multiple layer disk Air diffuser with multiple layer disk

2006-05-30

2006-05-30

Spear, Robert M. (Department: 2915)

Environmental heating and cooling; fluid handling and sanitary e

Miscellaneous

Design Patent

active

D0522138

CLAIM:
The ornamental design for an air diffuser with the multiple layer disks, as shown and described.

REFERENCES:
patent: 2144631 (1939-01-01), Kurth
patent: D113831 (1939-03-01), Blumenthal
patent: D120266 (1940-04-01), Kurth
patent: 2199525 (1940-05-01), Kurth
patent: 2228603 (1941-01-01), Kurth
patent: 2255850 (1941-09-01), Kurth
patent: D139347 (1944-11-01), Duffner
patent: D150357 (1948-07-01), Herbster
patent: D158672 (1950-05-01), Koch
patent: D166299 (1952-04-01), Corbett
patent: 4884497 (1989-12-01), Dosmann

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