CN212154867U - Mining communication acousto-optic annunciator - Google Patents
Mining communication acousto-optic annunciator Download PDFInfo
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- CN212154867U CN212154867U CN202020868513.5U CN202020868513U CN212154867U CN 212154867 U CN212154867 U CN 212154867U CN 202020868513 U CN202020868513 U CN 202020868513U CN 212154867 U CN212154867 U CN 212154867U
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CN202020868513.5U CN212154867U (en) | 2020-05-22 | 2020-05-22 | Mining communication acousto-optic annunciator |
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CN202020868513.5U CN212154867U (en) | 2020-05-22 | 2020-05-22 | Mining communication acousto-optic annunciator |
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Legal Events
Date | Code | Title | Description |
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GR01 | Patent grant | ||
GR01 | Patent grant | ||
PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A mine communication acousto optic signal device Effective date of registration: 20210406 Granted publication date: 20201215 Pledgee: Laishang Bank Co.,Ltd. Xiyuan sub branch Pledgor: SHANDONG LICHUANG ELECTRIC APPLIANCE Co.,Ltd. Registration number: Y2021980002440 |
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PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20221209 Granted publication date: 20201215 Pledgee: Laishang Bank Co.,Ltd. Xiyuan sub branch Pledgor: SHANDONG LICHUANG ELECTRIC APPLIANCE Co.,Ltd. Registration number: Y2021980002440 |
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PC01 | Cancellation of the registration of the contract for pledge of patent right |