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PERCY JONES TWINLOCK LTD

Overview
  • Total Patents
    19
About

PERCY JONES TWINLOCK LTD has a total of 19 patent applications. Its first patent ever was published in 1940. It filed its patents most often in United Kingdom, Canada and United States. Its main competitors in its focus markets consumer goods, machines and packaging and shipping are KALAMAZOO LOOSE LEAF BINDER CO, NS PLANNING KK and GRUNDELL CARL E.

Patent filings in countries

World map showing PERCY JONES TWINLOCK LTDs patent filings in countries
# Country Total Patents
#1 United Kingdom 9
#2 Canada 6
#3 United States 4

Patent filings per year

Chart showing PERCY JONES TWINLOCK LTDs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Sewell Frederick Robert 5
#2 Sewell Frederick R 5
#3 Robert Sewell Frederick 3
#4 Bigg Henry Thomas 1
#5 Rubert Sewell Frederick 1
#6 Kell James Edward 1
#7 Sunderland Samuel Henry 1
#8 Hurnell Reginald Charles 1

Latest patents

Publication Filing date Title
GB938388A Device for dispensing paper
GB855104A Improvements in or relating to end sheets for loose-leaf binders
US2910069A Posting tray for loose leaf filing systems
US2877773A Posting tray for loose leaf filing systems
GB808350A An improved posting tray for loose leaf filing systems
GB789139A Improvements in or relating to runners or skids
GB808349A An improved posting tray for loose leaf filing systems
GB722721A Improvements in creasing machines and combined creasing and printing machines
US2770238A Loose leaf filing trays or binders
GB709128A Improvements in or relating to loose leaf filing trays or binders
GB654515A Improvements in and relating to vertical hanging files
GB539275A Improvements relating to loose leaf ledgers and metal boxes
CA575796A Support member and method of manufacture thereof
CA541951A Loose leaf books and trays therefor
CA618469A Posting tray for loose leaf filing systems
CA376864A Loose leaf book and tray
CA548453A Loose leaf filing trays or binders
CA618877A Posting tray for loose leaf filing systems