Signals and indicators – Alarms – Fluid flow
Patent
1975-10-01
1977-08-16
Swisher, S. Clement
Signals and indicators
Alarms
Fluid flow
D19 34, B42D 900
Patent
active
040418928
ABSTRACT:
A book marker for books of the type having front and back covers includes an endless elastic band for encircling one of the covers and at least one marking strip joined to the elastic band for marking preselected pages of the book between the covers.
REFERENCES:
patent: D66322 (1924-12-01), Crane
patent: 139936 (1873-06-01), Ward
patent: 480649 (1892-08-01), Bailey
patent: 3020876 (1962-02-01), Riden
patent: 3898951 (1975-08-01), Clare
Corr Denis E.
Swisher S. Clement
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