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Patent applications and USPTO patent grants for Oostra; Derk.The latest application filed is for "premix gas burner".
Patent | Date |
---|---|
Premix gas burner Grant 11,326,808 - Van Zutphent , et al. May 10, 2 | 2022-05-10 |
Premix Gas Burner App 20200200437 - VAN ZUTPHENT; Rene ;   et al. | 2020-06-25 |
Premix Gas Burner App 20200182511 - VAN ZUTPHENT; Rene ;   et al. | 2020-06-11 |
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