Drilldown: Patents

Jump to navigation Jump to search
Patents > Office : NO or Other & Applicant is inventor: Yes & National tech categories : USPC 244/30 or None & IPCs : IPC B64C17/00 or IPC B64C35/00 & Family year: 1909

Use the filters below to narrow your results.

Year filed:
(There are no values for this filter)
Year granted:
Office: (Click arrow to add another value)
Inventors:
Sam Leonard Walkden (3) · Frederick William Dufwa (2) · John Galea (2) · Bertram Ogilvie (2) · Charles Arthur Beauchamp Pickard Hawkins (2)
Inventor country:
Applicant person:
Sam Leonard Walkden (3) · Frederick William Dufwa (2) · John Galea (2) · Bertram Ogilvie (2) · Charles Arthur Beauchamp Pickard Hawkins (2)
Applicant type:
Applicant is inventor: (Click arrow to add another value)
Granted:
Publication date:
Related to aircraft:
Assigned to:
National tech categories: (Click arrow to add another value)
IPCs: (Click arrow to add another value)
Family year:
(There are no values for this filter)
First filing:
Citations from after 1930:
Number of text pages:
Number of diagram pages:

Showing below up to 41 results in range #1 to #41.

View (previous 250 | next 250) (20 | 50 | 100 | 250 | 500)

View (previous 250 | next 250) (20 | 50 | 100 | 250 | 500)