Efron, Incorporated
Chicago, IL, US· latest recorded location
Efron, Incorporated is named on 1 US grants and 0 published applications in this corpus. Its most frequent classification is A47H (Furnishings for windows or doors).
- Granted patents
- 1
- Published applications
- 0
- Inventors
- 1
- Granted in 2026 so far
- 0
- Most recent grant
- 17 Mar 1981
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 0 |
By publication year.
Technology areas
Share of 1 documents
Recent patents
No published applications.
Most cited
By later US patents