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Foldable element for use in a case housing a roll of photosensitive material
Foldable element for use in a case housing a roll of photosensitive material
US Patent
5533620
· Granted Jul 9, 1996
Estimated economic value:
$13,296,000
ⓘ
Assignee
3M
Inventors
Franco Torterolo
(1 patents)
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