Mike and Ike (salt and pepper shakers; jelly candy)

“Mike and Ike (They Look Alike)” is the name of a comic strip by Rube Golberg that premiered in the San Francisco (CA) Bulletin on September 29, 1907. “Mike and Ike” (or “the twins”) became a diner slang nickname for salt and pepper shakers by at least 1936; this slang is not used today.
 
Just Born, Inc. introduced “Mike and Ike” jelly candies in 1940 and they’re still being made, even though the original Rube Goldberg “Mike and Ike” comic strips are unknown to many.
   
   
Wikipedia: Diner lingo
Mike and Ike/The twins: salt and pepper shakers
   
Wikipedia: Mike and Ike (They Look Alike)
Mike and Ike (They Look Alike) was a comic strip by Rube Goldberg, who introduced the identical twin characters in the San Francisco Bulletin on September 29, 1907.
(...)
Goldberg’s characters were adapted to film with Dancing Fools, released by Universal Pictures on September 21, 1927. Charles King (as Mike) and Charles Dorety (as Ike) portrayed the duo in eight of the 24 “Mike & Ike” comedy shorts. The others starred Joe Young and Ned La Salle. The series ended August 28, 1929 with the release of Good Skates.
 
The candy company Just Born introduced their Mike and Ike confection in 1940, but it was not a licensed product, as Goldberg’s goofy guys were gone by then.
 
Wikipedia: Mike and Ike
Mike and Ike is a brand of fruit-flavored jelly candy, similar to a jelly bean. They were first introduced by Just Born Inc. in 1940. They are oblong, fruit-flavored, chewy jelly bean candies that come in several colors and varieties. They are similar to Hot Tamales, another candy by the same manufacturer. They are fairly popular at movie theaters and Drive-in theaters. There is much speculation about the origin of the name Mike and Ike.
 
Mike and Ike brand jelly beans are certified by Jelly Beans Inc. and manufactured in the USA.
     
Google Books
American Speech
By American Dialect Society
v. 11
1936
Pg. 44:
MIKE AND IKE. Salt and pepper shakers.
   
Google Books
Salads and Herbs
By Cora Brown, Rose Brown and Bob Brown
PHiladelphia, PA: J.B. Lippincott Company
1938
Pg. 125:
Salt and pepper shakers are dubbed “the twins” and affectionately referred to as “Mike and Ike.”
   
Google Books
The American Language:
An inquiry into the development of English in the United States. Supplement I-II
By H. L. Mencken
New York, NY: Knopf
1945-48
Pg. 752:
Mike and Ike. Salt and pepper shakers.
     
Google Books
The American Thesaurus of Slang:
With supplement : a complete reference book of colloquial speech
By Lester V. Berrey and Melvin Van den Bark
New York, NY: Crowell
1948
Pg. 749:
Mike and Ike, twins, salt and pepper shakers
   
(Trademark)
Word Mark MIKE AND IKE
Goods and Services IC 030. US 046. G & S: CANDY. FIRST USE: 19400000. FIRST USE IN COMMERCE: 19400000
Mark Drawing Code (1) TYPED DRAWING
Serial Number 73355549
Filing Date March 19, 1982
Current Filing Basis 1A
Original Filing Basis 1A
Published for Opposition November 5, 1985
Registration Number 1380644
Registration Date January 28, 1986
Owner (REGISTRANT) JUST BORN, INC. CORPORATION NEW YORK 1300 STEFKO BLVD. BETHLEHEM PENNSYLVANIA 18018
(LAST LISTED OWNER) JUST BORN, INC. CORPORATION PENNSYLVANIA 1300 STEFKO BOULEVARD BETHLEHEM PENNSYLVANIA 18017
Assignment Recorded ASSIGNMENT RECORDED
Attorney of Record SANFORD J. PILTCH
Type of Mark TRADEMARK
Register PRINCIPAL
Affidavit Text SECT 15. SECT 8 (6-YR). SECTION 8(10-YR) 20060504.
Renewal 1ST RENEWAL 20060504
Live/Dead Indicator LIVE