Caledonian Mining Co., Ltd.
Patent Owner
Stats
- 1 US PATENTS IN FORCE
- 0 US APPLICATIONS PENDING
- Apr 26, 1994 most recent publication
Details
- 1 Issued Patents
- 0 Issued in last 3 years
- 0 Published in last 3 years
- 34 Total Citation Count
- Dec 03, 1980 Earliest Filing
- 9 Expired/Abandoned/Withdrawn Patents
Patent Activity in the Last 10 Years
Technologies
Intl Class
Technology
Matters
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Recent Publications
- No Recent Publications to Display
Recent Patents
Patent #
Title
Filing Date
Issue Date
Intl Class
5149957 Semiconductor-to-metal optical switch for power limitation in the infraredAug 21, 91Sep 22, 92[H01J]
Expired/Abandoned/Withdrawn Patents
Patent #
Title
Status
Filing Date
Issue/Pub Date
Intl Class
4890676 Apparatus and method for lining bore holes with pre-formed lining shellsExpiredOct 12, 88Jan 02, 90[E21D, E21B]
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