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Inspection hole plug
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Patent number 8,817,938
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Issue date Aug 26, 2014
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Mitsubishi Heavy Industries, Ltd.
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Hiroshi Hirano
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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-
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3370742
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Patent number 3,370,742
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Issue date Feb 27, 1968
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F22 - STEAM GENERATION
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3254788
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Patent number 3,254,788
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Issue date Jun 7, 1966
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F22 - STEAM GENERATION
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3235120
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Patent number 3,235,120
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Issue date Feb 15, 1966
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F22 - STEAM GENERATION
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2944697
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Patent number 2,944,697
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Issue date Jul 12, 1960
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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2705574
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Patent number 2,705,574
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Issue date Apr 5, 1955
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F22 - STEAM GENERATION
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2688315
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Patent number 2,688,315
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Issue date Sep 7, 1954
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F22 - STEAM GENERATION
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2574160
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Patent number 2,574,160
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Issue date Nov 6, 1951
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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2540145
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Patent number 2,540,145
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Issue date Feb 6, 1951
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F22 - STEAM GENERATION
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2370804
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Patent number 2,370,804
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Issue date Mar 6, 1945
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F22 - STEAM GENERATION
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2349425
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Patent number 2,349,425
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Issue date May 23, 1944
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F22 - STEAM GENERATION
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2348273
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Patent number 2,348,273
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Issue date May 9, 1944
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F22 - STEAM GENERATION
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2329037
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Patent number 2,329,037
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Issue date Sep 7, 1943
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F22 - STEAM GENERATION
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2283371
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Patent number 2,283,371
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Issue date May 19, 1942
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F22 - STEAM GENERATION
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2276606
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Patent number 2,276,606
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Issue date Mar 17, 1942
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F22 - STEAM GENERATION
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2234154
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Patent number 2,234,154
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Issue date Mar 4, 1941
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F22 - STEAM GENERATION
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1992793
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Patent number 1,992,793
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Issue date Feb 26, 1935
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F22 - STEAM GENERATION
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1992431
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Patent number 1,992,431
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Issue date Feb 26, 1935
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F22 - STEAM GENERATION
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1846400
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Patent number 1,846,400
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Issue date Feb 23, 1932
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F22 - STEAM GENERATION
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1798491
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Patent number 1,798,491
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Issue date Mar 31, 1931
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F22 - STEAM GENERATION
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1783129
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Patent number 1,783,129
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Issue date Nov 25, 1930
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F22 - STEAM GENERATION
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1774889
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Patent number 1,774,889
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Issue date Sep 2, 1930
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F22 - STEAM GENERATION
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1748665
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Patent number 1,748,665
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Issue date Feb 25, 1930
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F22 - STEAM GENERATION
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1735126
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Patent number 1,735,126
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Issue date Nov 12, 1929
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F22 - STEAM GENERATION
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1734343
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Patent number 1,734,343
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Issue date Nov 5, 1929
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F22 - STEAM GENERATION
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1730721
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Patent number 1,730,721
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Issue date Oct 8, 1929
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F22 - STEAM GENERATION
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1718233
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Patent number 1,718,233
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Issue date Jun 25, 1929
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F22 - STEAM GENERATION