Graystone Corporation
Monroeville, PA, US· latest recorded location
Graystone Corporation is named on 3 US grants and 0 published applications in this corpus. Its most frequent classification is B06B (Methods or apparatus for generating or transmitting mechanical vibrations of infrasonic, sonic).
- Granted patents
- 3
- Published applications
- 0
- Inventors
- 2
- Granted in 2026 so far
- 0
- Most recent grant
- 27 Jun 1978
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 3 | 0 |
By publication year.
Technology areas
Share of 3 documents
Recent patents
- Track tamper with hingeable unitary pivotable tamping unit27 Jun 1978US 4,096,806 A
- Vibratory drive mechanism6 Jun 1978US 4,092,903 A
- Track tamper17 Jan 1978US 4,068,595 A
No published applications.
Most cited
By later US patents