On eBay this week is a Mersman Tables Hi-lo convertible coffee table similar to the one on I love Lucy. 
It appears to be walnut wood and identical in style and construction to the one on the show. It can be adjusted in height and the leaves opened for use as dining or card table just like the one seen on the show. It has a product number 1402S pictured in the listing. See pictures below from the seller’s listing or Click here to view full details on eBay
Alternative Listing for this table: CLICK HERE See this table on Etsy (US)
Measurements:
Lowered 15.75″ high
Raised 26 2/3″ high
Top:
Leaves Down 36″ x 20″
Leaves Up 36″ x 36 1/4″
Inventor of the spring and hinge mechanism:
Boris Hoppe
Patented Mar. 6, 1951
US2544229
Patented Mar. 6, 1951
US2544229
I have that same table! We love it it was my great Aunts.
How lucky you are! – its a very special table and rare too – do you have a picture to share?.