Holder for carrying wafers

Details Holder for carrying wafers Holder for carrying wafers

1992-04-30

1993-08-03

Douglas, Alan P.

Machines not elsewhere specified

Material working, abrading, or founding machinery

Element or attachment

D 6462, D34 28, D34 40

Patent

active

D03380246

REFERENCES:
patent: D135832 (1943-06-01), Hagstrom
patent: D236414 (1975-08-01), Kroll
patent: D249663 (1978-09-01), Willeit
patent: D259536 (1981-06-01), Douglas
patent: D284801 (1986-07-01), Hauser
patent: D288739 (1987-03-01), Johnson, Jr. et al.
patent: D303031 (1989-08-01), Ellis
patent: D327761 (1992-07-01), Stanfield
patent: D332340 (1993-01-01), Schumacher et al.
patent: 4619464 (1986-10-01), Hwang
S&K Products International, Inc., .TM.1990, 3 pages showing wafer carriers, copy in patented file 485569 now patent no. 5054210.

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