CN203840333U - 一种实现信号双向传输的分离式求助对讲装置 - Google Patents
一种实现信号双向传输的分离式求助对讲装置 Download PDFInfo
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- CN203840333U CN203840333U CN201420058888.XU CN201420058888U CN203840333U CN 203840333 U CN203840333 U CN 203840333U CN 201420058888 U CN201420058888 U CN 201420058888U CN 203840333 U CN203840333 U CN 203840333U
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- 230000008054 signal transmission Effects 0.000 title abstract 2
- 230000005236 sound signal Effects 0.000 claims abstract description 11
- 239000002184 metal Substances 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 abstract description 4
- 230000003321 amplification Effects 0.000 abstract 1
- 238000009434 installation Methods 0.000 abstract 1
- 238000003199 nucleic acid amplification method Methods 0.000 abstract 1
- 238000004891 communication Methods 0.000 description 3
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CN201420058888.XU CN203840333U (zh) | 2014-02-08 | 2014-02-08 | 一种实现信号双向传输的分离式求助对讲装置 |
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CN201420058888.XU CN203840333U (zh) | 2014-02-08 | 2014-02-08 | 一种实现信号双向传输的分离式求助对讲装置 |
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CN203840333U true CN203840333U (zh) | 2014-09-17 |
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CN201420058888.XU Expired - Fee Related CN203840333U (zh) | 2014-02-08 | 2014-02-08 | 一种实现信号双向传输的分离式求助对讲装置 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
EE01 | Entry into force of recordation of patent licensing contract |
Assignee: CHANGSHA SPON COMMUNICATION TECHNOLOGY CO.,LTD. Assignor: Yu Qiushi Contract record no.: 2014430000169 Denomination of utility model: Separate type help-seeking intercommunication apparatus achieving two-way signal transmission Granted publication date: 20140917 License type: Exclusive License Record date: 20141223 |
|
LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
TR01 | Transfer of patent right | ||
TR01 | Transfer of patent right |
Effective date of registration: 20210917 Address after: No. 70, Nantang Road, Lugu street, Changsha high tech Development Zone, Changsha City, Hunan Province, 410205 Patentee after: Shibang Communication Co.,Ltd. Address before: 410000 No. 88, Changlang Road, Furong district, Changsha City, Hunan Province Patentee before: Yu Qiushi |
|
CF01 | Termination of patent right due to non-payment of annual fee | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140917 |