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| Patents for John Arthur Tatem | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,947,268 | Aug. 02, 1960 | R.D. Northcote, J.A. Tatem | Boilers | stationary boilers | |
| GB-856,751 | Dec. 21, 1960 | R.D. Northcote, J.A. Tatem | Improvements in Boilers | stationary boilers | |
| GB-856,879 | Dec. 21, 1960 | R.D. Northcote, J.A. Tatem | Improvements in Boilers | stationary boilers | |
| CA-616,380 | Mar. 14, 1961 | R.D. Northcote, J.A. Tatem | Boilers | stationary boilers | |