Writing and display apparatus

Details Writing and display apparatus Writing and display apparatus

1977-08-30

1979-10-30

Mancene, Louis G.

Card, picture, or sign exhibiting

Illuminated sign

Luminescent

G09F 1322

Patent

active

041723333

ABSTRACT:
A writing and display apparatus which includes a unified writing and display surface exhibiting a reference luminosity; and a hand-held write/erase instrument which is used to apply writing energy to said surface of reference luminosity thereby causing writing to be displayed and retained for an appropriate length of time, and which is also used to apply erasing energy directly to said retained, displayed writing thereby causing the writing to be erased.

REFERENCES:
patent: 1383082 (1921-06-01), Dodds
patent: 3443332 (1969-05-01), Christy
patent: 3509644 (1970-05-01), Santell et al.
patent: 3559307 (1971-02-01), Barrekette et al.
patent: 3617325 (1971-11-01), Spokes et al.
patent: 3676677 (1972-07-01), Condas et al.
patent: 3836243 (1974-09-01), Melchior
patent: 3960753 (1976-06-01), Larrabee
Journal of Applied Physics, vol. 47; No. 6; Jun. 1978; pp. 2378-2381.
Applied Physics Letters; vol. 17, No. 2; 7-15-70; pp. 51-52-53.
Journal of Applied Physics; vol. 45; No. 11; Nov. 1974; pp. 4718-4723.
Applied Physics Letters; vol. 14; No. 7; 4-1-1969; pp. 208, 209.

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