Manufacturer’s covers are made of metal

 

and are circular

 

or square

 

in shape.
There are no colored or gilded covers from this manufacturer, and no city emblems were found on the covers.

The cover’s purpose is not explicitly stated on it, although in many cases it could be inferred that these are sewer covers

 

.

The covers are usually intended for various municipalities whose names appear on the cover (without an emblem)

 

.

The year of manufacture also appears on the covers (which sometimes seems very, very old)

 

.

Standards
No standard marks were found on the manufacturer’s covers (possibly due to the fact that the covers are very old and were produced before laws regarding standard marks were enacted).

Typical covers
A background of circles composed of squares

 

, a background of circles of different sizes contained within each other

 

, or a background of large diamonds

 

. There are 4 manhole covers in the site that are made by the Manufacturer
Click for the 4 covers made by Feder (Of these, 0 are best covers)