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| More topics under "F28G - Cleaning of internal or external surfaces of heat-exchange or heat-transfer conduits, e.g. water tubes of boilers" (6,558) |
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| F28G 1 - Non-rotary, e.g. reciprocated, appliances (1,988) | | F28G 11 - Cleaning by combustion processes, e.g. using squibs, using travelling burners (56) | | F28G 13 - Appliances or processes not covered by groups; Combinations of appliances or processes covered by groups (505) | | F28G 15 - Details (1,029) | | F28G 3 - Rotary appliances (725) | | F28G 5 - Cleaning by distortion (50) | | F28G 7 - Cleaning by vibration (611) | | F28G 9 - Cleaning by flushing or washing, e.g. with chemical solvents (1,594) |
| Patents for F28G - Cleaning of internal or external surfaces of heat-exchange or heat-transfer conduits, e.g. water tubes of boilers (3) |
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| 06/09/1992 | CA1302809C Boiler tube wall inspection system | | 05/15/1990 | CA1268999A1 Method for removing deposits on boiler tubes | | 06/24/1986 | CA1206393A1 Four-way fluid flow diverter valve |
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