Company Names, addresses, dates¹:
  NuGrape Bottling Co, 210 2nd St SW (1925-1930)
  NuIcy Bottling Co, 210 2nd St SW (1931)
  NuIcy Bottling Co, 315 L St SW (1932-1933)

Notes:
An article by Bill Baab that appears in the July-August 2007 edition of "Bottles and Extras" says that NuGrape was developed in Atlanta. Fred Branan Gary got a franchise for NuGrape in Charlotte NC about 1920. He moved his franchise to Washington DC in 1922. His family joined him in 1924.².
The article goes on to say that Welch's Grape Juice company sued NuGrape to make it put real grape juice in the soft drink². Apparently it wasn't feasible to put real grape juice into a carbonated soft drink. I suspect that is why NuGrape changed to NuIcy. Note that the first 2 bottles below are almost identical except one says "IMITATION GRAPE" and "NOT GRAPE JUICE", and the other doesn't. I suspect that the one that doesn't have that embossing is older, and that the extra embossing was added during or after the legal battles.

Bottles:

(enlarge)	This is a 7.6" aqua machine-made crown top bottle embossed: front: Nu Grape / A FLAVOR YOU CANT FORGET / TRADE MARK REGISTERED / BOTTLE PAT'D MARCH 9, 1920 back: Nu Grape / A FLAVOR YOU CANT FORGET / MIN CONTENTS 6 FL. OZ. bottom:WASHINGTON, / D.C.
(enlarge)	This is a minor variation from the bottle above. It is a 7.7" aqua machine-made crown top bottle embossed: front: Nu Grape / A FLAVOR YOU CANT FORGET / IMITATION GRAPE / TRADE MARK REGISTERED / BOTTLE PAT'D MARCH 9, 1920 back: Nu Grape / A FLAVOR YOU CANT FORGET / NOT GRAPE JUICE / CONTENTS 6 FL. OZ. bottom:WASHINGTON, / D.C.
(enlarge)	This is a 9.3" clear machine-made crown top bottle embossed: front: Nu Icy / A FLAVOR YOU CANT FORGET / BOTTLE PAT'D MARCH 9, 1920 back: Nu Icy / A FLAVOR YOU CANT FORGET / MINIMUM CONTENTS / FULL HALF PINT bottom:WASHINGTON, D.C.
(enlarge)	This is an 11.2" clear machine-made "picnic" crown top bottle embossed: front: Nu Icy / CONTENTS 24 FLU. OZ. back: Nu Icy / WASHINGTON, D.C. bottom:63 B 31