Putz; Helmar
Patent Applications and Registrations
Patent applications and USPTO patent grants for Putz; Helmar.The latest application filed is for "building board, particularly gypsum plasterboard".
- Putz; Helmar - A-4822 Bad Goisern 517 AT
| Patent | Date |
|---|---|
| Building board, particularly gypsum plasterboard Grant 4,858,402 - Putz August 22, 1 | 1989-08-22 |
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