Tulsa, Oklahoma
United States
3
2019-03-28
The entities that hold a legal rights for patent applications filed by inventor Cockerham John:
John Cockerham from Tulsa, US has applied for patents for these inventions. The list has both pending applications and granted patents:
Apparatus to protect sealing surfaces of thief hatches
#2 | 2018-09-27Apparatus to protect sealing surfaces of thief hatches
#3 | 2018-09-27Thief hatches with diaphragm assisted sealing
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