Two-dimensional calibration device
CN309769448SActive Publication Date: 2026-02-03张永春 +3
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Patent Information
- Application Number
- CN202430763630.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Designs(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-02
- Publication Date
- 2026-02-03
- Estimated Expiration
- 2039-12-02
Smart Images
Figure 000007_ABST
Abstract
1. Name of the designed product: two-dimensional calibration device. 2. Use of the designed product: the designed product is mainly used for the device for improving and calibrating room acoustics in architectural acoustics, decoration. 3. Design points of the designed product: in shape. 4. Picture or photo best indicating the design points: perspective view.
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