Optical: systems and elements – Projection screen
Reexamination Certificate
2005-01-18
2005-01-18
Fuller, Rodney (Department: 2851)
Optical: systems and elements
Projection screen
C359S449000, C359S454000, C359S459000
Reexamination Certificate
active
06844967
ABSTRACT:
A screen unit includes a semipermeable screen sheet sandwiched between a first transparent sheet and a second transparent sheet. The semipermeable screen sheet transmits and reflects a projected image in a constant percentage. The first transparent sheet such as an acrylic sheet wider than the semipermeable screen sheet. The second transparent sheet is the same as the first transparent sheet.
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Sakakibara Yoshinori
Sato Yasuo
Teramoto Kohei
Birch Stewart Kolasch & Birch, LLP.
Cruz Magda
Fuller Rodney
Mitsubishi Denki & Kabushiki Kaisha
Nishinihon-Denken Inc.
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