CN202759492U - 矿用本安型扩音电话 - Google Patents
矿用本安型扩音电话 Download PDFInfo
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- CN202759492U CN202759492U CN 201220362216 CN201220362216U CN202759492U CN 202759492 U CN202759492 U CN 202759492U CN 201220362216 CN201220362216 CN 201220362216 CN 201220362216 U CN201220362216 U CN 201220362216U CN 202759492 U CN202759492 U CN 202759492U
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CN 201220362216 CN202759492U (zh) | 2012-07-25 | 2012-07-25 | 矿用本安型扩音电话 |
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CN 201220362216 CN202759492U (zh) | 2012-07-25 | 2012-07-25 | 矿用本安型扩音电话 |
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CN202759492U true CN202759492U (zh) | 2013-02-27 |
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CN 201220362216 Expired - Fee Related CN202759492U (zh) | 2012-07-25 | 2012-07-25 | 矿用本安型扩音电话 |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105594162A (zh) * | 2013-08-30 | 2016-05-18 | 豪倍公司 | WiFi危险区VoIP寻呼电话及系统 |
CN105610564A (zh) * | 2015-12-25 | 2016-05-25 | 中国矿业大学 | 一种矿用本安型双向数字语音广播系统及其相关硬件架构 |
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2012
- 2012-07-25 CN CN 201220362216 patent/CN202759492U/zh not_active Expired - Fee Related
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105594162A (zh) * | 2013-08-30 | 2016-05-18 | 豪倍公司 | WiFi危险区VoIP寻呼电话及系统 |
CN105594162B (zh) * | 2013-08-30 | 2019-02-05 | 豪倍公司 | WiFi危险区VoIP寻呼电话及系统 |
CN105610564A (zh) * | 2015-12-25 | 2016-05-25 | 中国矿业大学 | 一种矿用本安型双向数字语音广播系统及其相关硬件架构 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
C56 | Change in the name or address of the patentee |
Owner name: SICHUAN HENGJIN INFORMATION ENGINEERING CO., LTD. Free format text: FORMER NAME: SICHUAN HIDILI ARITIME INFORMATION ENGINEERING CO., LTD. |
|
CP01 | Change in the name or title of a patent holder |
Address after: 610041, No. 504, building 2, Tai Hing International 66, Tianfu four street, Chengdu hi tech Zone, Sichuan Patentee after: Sichuan Heng Jin Information Engineering Co., Ltd. Address before: 610041, No. 504, building 2, Tai Hing International 66, Tianfu four street, Chengdu hi tech Zone, Sichuan Patentee before: Sichuan Hidili Aritime Information Engineering Co., Ltd. |
|
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130227 Termination date: 20150725 |
|
EXPY | Termination of patent right or utility model |