Static structures (e.g. – buildings) – With entrance for persons or objects in horizontal or... – With additional enclosure structure; e.g. – manhole
Patent
1990-11-30
1991-12-31
Chilcot, Jr., Richard E.
Static structures (e.g., buildings)
With entrance for persons or objects in horizontal or...
With additional enclosure structure; e.g., manhole
E04F 1900
Patent
active
050760300
ABSTRACT:
An alignment plug recessed into a concrete floor to be level with the floor surface having a removable cap to uncover permanent reference lines for aligning machinery.
REFERENCES:
patent: 1660833 (1928-02-01), Cronjaeger
patent: 3911635 (1975-10-01), Traupe
patent: 4075796 (1978-02-01), Cuozzo
patent: 4461597 (1984-07-01), Laurin
patent: 4896705 (1990-01-01), Podgers et al.
patent: 4925337 (1990-05-01), Spiess et al.
Carlson Russell L.
Schwab Albert J.
Chilcot Jr. Richard E.
Gregory Leo
Wood Wynn
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