den Hertog; Willem Cornelis
Patent Applications and Registrations
Patent applications and USPTO patent grants for den Hertog; Willem Cornelis.The latest application filed is for "extruder with hydrostatic bearing".
- den Hertog; Willem Cornelis - Hardenberg NL
- DEN Hertog; Willem Cornelis - Zwolle NL
| Patent | Date |
|---|---|
| Extruder with hydrostatic bearing Grant 3,945,621 - den Hertog , et al. March 23, 1 | 1976-03-23 |
| Method for forming tube with thickened socket end Grant 3,899,565 - de Putter , et al. August 12, 1 | 1975-08-12 |
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