- All sections
- A - Human necessities
- A63H - Toys, e.g. tops, dolls, hoops or building blocks
- A63H 19/28 - Mechanical toy railway systems
Patent holdings for IPC class A63H 19/28
Total number of patents in this class: 4
10-year publication summary
|
1
|
0
|
0
|
1
|
0
|
2
|
0
|
0
|
0
|
1
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Geoffrey, LLC | 1 |
1 |
| Learning Curve Brands, Inc. | 23 |
1 |
| Universite Lyon 1 Claude Bernard | 34 |
1 |
| Great Coasters International, Inc. | 1 |
1 |
| Other owners | 0 |