PTL Engineering
2Patents
0Active
2Granted
17Portfolio score
Filing activity: Sep 30, 1982 → Nov 21, 1983
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| USD282671S | Circle drafting template | General | 20 | Expired |
| USD278068S | Drafting template | General | 6 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.