Ghys; Theofiel H.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Ghys; Theofiel H..The latest application filed is for "photographic silver complex diffusion transfer reversal process under yellow safelight".
- Ghys; Theofiel H. - Kontich BE
| Patent | Date |
|---|---|
| Photographic silver complex diffusion transfer reversal process under yellow safelight Grant 4,686,170 - Vermeulen , et al. August 11, 1 | 1987-08-11 |
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