Heller; Harold G.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Heller; Harold G..The latest application filed is for "photochromic compounds".
- Heller; Harold G. - Aberystwyth GB7
- Heller; Harold G. - Waunfawr Aberystwyth GB7
| Patent | Date |
|---|---|
| Photochromic compounds Grant 4,220,708 - Heller September 2, 1 | 1980-09-02 |
| Photochromic compounds for hologram recording Grant 4,186,002 - Heller , et al. January 29, 1 | 1980-01-29 |
| Photochromic compounds Grant 4,182,629 - Heller January 8, 1 | 1980-01-08 |
| Photochromic compounds Grant 4,145,536 - Heller March 20, 1 | 1979-03-20 |
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