Heating unit for use in melting and keeping hydrocolloid cartridges in liquid form
USD332998S · kind S · design
1Cited by
2References
1Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 31, 1990 |
| Grant date | Feb 2, 1993 |
| Priority date | — |
| Expiry date | Feb 2, 2007 |
Classification
- Technology area (CPC —)General
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.