when was the payphone invented

Keyword Analysis

Keyword	CPC	PCC	Volume	Score	Length of keyword
when was the payphone invented	1.28	0.8	8553	70	30
when	0.66	1	963	72	4
was	0.57	0.4	3131	44	3
the	0.8	0.1	9204	1	3
payphone	0.46	0.7	8013	59	8
invented	1.32	0.3	2116	10	8

Keyword	CPC	PCC	Volume	Score
when was the payphone invented	1.76	0.5	2753	3
who invented the payphone	1.39	0.7	6162	29
when was the first pay phone invented	0.16	0.1	643	72
when did payphone come out	0.34	0.1	9910	34
what year did payphone come out	0.13	0.7	7917	79
who made the song payphone	1.12	0.1	148	27
when was payphone released	1.1	0.9	9306	73
what year was payphone released	1.77	0.4	9654	9
history of pay phones	0.55	0.5	3185	20
when did pay phones come out	1.46	1	5193	26
when were payphones popular	1.13	0.9	693	5
vintage payphone for sale	0.71	0.9	6754	29
when did payphone song come out	0.8	0.6	762	28
how old is the song payphone	0.11	0.4	1042	97
first payphones in usa	0.47	1	6354	43
antique payphone for sale	0.88	0.5	1532	37
how did payphones work	0.72	0.3	2309	30
phone pay payment history	0.54	0.6	1011	37