US1929751A
Acoustic tile
Abstract
This record has no abstract on file.
Term
Term ended
Expired 10 October 1950, 76 years ago.
- Priority and filed
- Granted
- Expired
- Today
Every citation, both ways
| Document | Relation | Office | Cited during |
|---|---|---|---|
| US9926702B2 | Cited by | United States of America | Applicant |
| US3021915A | Cited by | United States of America | Search report |
| US2931214A | Cited by | United States of America | Search report |
| US3861493A | Cited by | United States of America | Search report |
| US3104731A | Cited by | United States of America | Search report |
| US4696141A | Cited by | United States of America | Search report |
| US2935152A | Cited by | United States of America | Search report |
| US9476204B2 | Cited by | United States of America | Search report |
| WO2020058345A1 | Cited by | World Intellectual Property Organization (WIPO) | International search |
| EP3626909A1 | Cited by | European Patent Office (EPO) | Search report |
Numbers
- Application
- 626602
Titles
- English
- Acoustic tile
Classification
- CPC, 5
- E04B1/8409
- E04B1/6125
- E04B2001/8263
- E04B2001/8433
- E04B2001/8442
- IPC, 3
- E04B1 61
- E04B1 82
- E04B1 84