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Class Information
Number: 405/194
Name: Hydraulic and earth engineering > Diving > With continuous surface access
Description: Method or apparatus wherein the means with which personnel may carry on an underwater operation includes an uninterrupted passageway between the water surface and an underwater site.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7258509 |
Diving apparatus |
Aug. 21, 2007 |
| 7114882 |
Aqua-terra planetary transport system and development pneumatic and electro-magnetic underwater tube-link transportation system |
Oct. 3, 2006 |
| 5639186 |
Water funnel |
Jun. 17, 1997 |
| 5199193 |
Working machine |
Apr. 6, 1993 |
| 5049004 |
Underwater building and constructing method thereof |
Sep. 17, 1991 |
| 4904118 |
Structure for viewing an underwater environment |
Feb. 27, 1990 |
| 4872781 |
Open top floatable barge repair box with barge to box sealing system |
Oct. 10, 1989 |
| 4867608 |
Method and apparatus for repairing submerged liners |
Sep. 19, 1989 |
| 4615641 |
Barge repair device |
Oct. 7, 1986 |
| 4433937 |
Method of tunnel construction employing submerged caisson |
Feb. 28, 1984 |
| 4268191 |
Stand-by service structure for casual off-shore attendance |
May. 19, 1981 |
| 4186532 |
Underwater observatory |
Feb. 5, 1980 |
| 4123858 |
Versatile submersible device for dredging or other underwater functions |
Nov. 7, 1978 |
| 3986280 |
Apparatus for forming a concrete wall |
Oct. 19, 1976 |
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