CN202818602U - 矿用本安音箱 - Google Patents
矿用本安音箱 Download PDFInfo
- Publication number
- CN202818602U CN202818602U CN 201220401572 CN201220401572U CN202818602U CN 202818602 U CN202818602 U CN 202818602U CN 201220401572 CN201220401572 CN 201220401572 CN 201220401572 U CN201220401572 U CN 201220401572U CN 202818602 U CN202818602 U CN 202818602U
- Authority
- CN
- China
- Prior art keywords
- master control
- control chip
- intrinsic safety
- chip
- audio amplifier
- Prior art date
- 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
Links
Abstract
Description
Claims (6)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220401572 CN202818602U (zh) | 2012-08-14 | 2012-08-14 | 矿用本安音箱 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220401572 CN202818602U (zh) | 2012-08-14 | 2012-08-14 | 矿用本安音箱 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202818602U true CN202818602U (zh) | 2013-03-20 |
Family
ID=47877401
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220401572 Expired - Fee Related CN202818602U (zh) | 2012-08-14 | 2012-08-14 | 矿用本安音箱 |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202818602U (zh) |
-
2012
- 2012-08-14 CN CN 201220401572 patent/CN202818602U/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 | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Intrinsic safe sound box for mine Effective date of registration: 20130605 Granted publication date: 20130320 Pledgee: Jiangsu Jiangnan Rural Commercial Bank Limited by Share Ltd Pledgor: Changzhou Lianli Automation Technology Co., Ltd. Registration number: 2013990000351 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20140604 Granted publication date: 20130320 Pledgee: Jiangsu Jiangnan Rural Commercial Bank Limited by Share Ltd Pledgor: Changzhou Lianli Automation Technology Co., Ltd. Registration number: 2013990000351 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Intrinsic safe sound box for mine Effective date of registration: 20140605 Granted publication date: 20130320 Pledgee: Jiangsu Jiangnan Rural Commercial Bank Limited by Share Ltd Pledgor: Changzhou Lianli Automation Technology Co., Ltd. Registration number: 2014990000436 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20150529 Granted publication date: 20130320 Pledgee: Jiangsu Jiangnan Rural Commercial Bank Limited by Share Ltd Pledgor: Changzhou Lianli Automation Technology Co., Ltd. Registration number: 2014990000436 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Intrinsic safe sound box for mine Effective date of registration: 20150604 Granted publication date: 20130320 Pledgee: Jiangsu Jiangnan Rural Commercial Bank Limited by Share Ltd Pledgor: Changzhou Lianli Automation Technology Co., Ltd. Registration number: 2015990000434 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130320 Termination date: 20150814 |
|
| EXPY | Termination of patent right or utility model |