CN202050419U - 四线制广播通话设备 - Google Patents
四线制广播通话设备 Download PDFInfo
- Publication number
- CN202050419U CN202050419U CN2011201282740U CN201120128274U CN202050419U CN 202050419 U CN202050419 U CN 202050419U CN 2011201282740 U CN2011201282740 U CN 2011201282740U CN 201120128274 U CN201120128274 U CN 201120128274U CN 202050419 U CN202050419 U CN 202050419U
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- CN
- China
- Prior art keywords
- wire
- audio
- wire system
- signal
- broadcasting
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Abstract
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Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2011201282740U CN202050419U (zh) | 2011-04-27 | 2011-04-27 | 四线制广播通话设备 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2011201282740U CN202050419U (zh) | 2011-04-27 | 2011-04-27 | 四线制广播通话设备 |
Publications (1)
Publication Number | Publication Date |
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CN202050419U true CN202050419U (zh) | 2011-11-23 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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CN2011201282740U Expired - Fee Related CN202050419U (zh) | 2011-04-27 | 2011-04-27 | 四线制广播通话设备 |
Country Status (1)
Country | Link |
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CN (1) | CN202050419U (zh) |
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2011
- 2011-04-27 CN CN2011201282740U patent/CN202050419U/zh not_active Expired - Fee Related
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
ASS | Succession or assignment of patent right |
Owner name: BEIJING HUALIN STONE TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: BEIJING LI-TECH. PHOTOELECTRIC CO., LTD. Effective date: 20140416 |
|
C41 | Transfer of patent application or patent right or utility model | ||
COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 100094 HAIDIAN, BEIJING TO: 100097 HAIDIAN, BEIJING |
|
TR01 | Transfer of patent right |
Effective date of registration: 20140416 Address after: 100097 Beijing city Haidian District landianchang Road No. 2 Building No. 2 hospital Jin Yuan era business center 1 unit A block 17D Patentee after: Beijing Hualin Vision Technology Co., Ltd. Address before: 100094 Beijing city Haidian District Road North Xiao Ying Ching Yee home non publicbuildings (hotel) four floor three unit 401 Patentee before: Beijing Liming Tianwei Photoelectric Technology Co., Ltd. |
|
PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Four-wire broadcasting conversation device Effective date of registration: 20181029 Granted publication date: 20111123 Pledgee: Zhongguancun Beijing technology financing Company limited by guarantee Pledgor: Beijing Hualin Vision Technology Co., Ltd. Registration number: 2018990001005 |
|
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: 20111123 Termination date: 20200427 |