Underground construction : water, sewer, gas & cable

TIBKAT | 52.1997 -

TUBE SEWER CONSTRUCTION METHOD AND UNDERGROUND FLOW CHANNEL

NAKADA SHINICHI / HASHIMOTO SATOSHI / MATSUOKA KAORU | Europäisches Patentamt | 2016

Benefits of underground construction on two sewer projects

Day, D. A. / Marsh, H. L. / Kwiatkowski, T. P. | British Library Conference Proceedings | 2000

Underground cable construction

Blain, R. | Engineering Index Backfile | 1930

Electrical equipment applied to underground garage sewer water treatment

GAO XIAORAN | Europäisches Patentamt | 2021