JPS5250702A
Expired / Lapsed
JP
⏱️ 0.0 years remaining
Optical information recording and reproduction apparatus
Assignee: Panasonic Holdings Corp
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Filing: 1975-10-21
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Granted: —
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Expires: 1995-10-21
Abstract
Abstract PURPOSE:To read the records on a recording medium such as discs with light beams and subsequently erase them by radiating light beams of a larger radiation area, thereby making possible the positive erasion of high-density records.
Inventors
- 👤 Shiro Tsuji
- 👤 Tomio Yoshida
- 👤 Akifumi Nakada
- 👤 Hideo Okamura
- 👤 Yasuhisa Fukushima
Bibliographic Details
Application Number
—
Jurisdiction
JP
Data Source
google_patents
Last Synchronized
2026-11-03 00:01
CPC Classifications
—
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