HEARTDRUM
Summary of public USPTO data
- Owner
- HarperCollins Publishers L.L.C.
- Status
- Live/Registered
- Serial number
- 97760984
- Registration number
- 8503538
- Filing date
- 2023-01-19
- Registration date
- 2026-10-13
- International classes
- 9, 16
Goods and services
Class 9
- downloadable electronic non-fiction books for children and teens
all of the aforementioned on a variety of topics
Class 16
- printed non-fiction books for children and teens
all of the aforementioned on a variety of topics