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US3439109A Expired / Lapsed US ⏱️ 0.0 years remaining

Thin film magnetic stores using printed electric circuits

Assignee: EMI Ltd
•
Filing: 1962-09-28
•
Granted: 1969-04-15
•
Expires: 1982-09-28
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Abstract

No abstract record available.

Inventors

  • 👤 David Edward Birt
  • 👤 Anthony Thomas Gibson
  • 👤 Peter John Holden
  • 👤 Reginald Sidney Webley

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-27 08:33
CPC Classifications
H; H05; H05K; H05K3/00; H05K3/36; H05K3/361; H05K3/363; H05K2201/00; H05K2201/03; H05K2201/0332; H05K2201/0388; H05K2201/0394; H05K2203/00; H05K2203/01; H05K2203/0195

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 226 words
A PRINTED ELECTRIC CIRCUIT COMPRISING A FIRST SET OF CONDUCTORS ADHERING TO THE SURFACE OF A FIRST SUPPORT OF INSULATING MATERIAL, SAID CONDUCTORS HAVING STRAIGHT AND PARRALLEL PORTIONS, A SECOND SET OF CONDUCTORS ADHERING TO THE SURFACE OF A SECOND SUPPORT OF INSULATING MATERIAL, SAID LATTER CONDUCTORS HAVING STRAIGHT AND PARALLEL PORTIONS, A THIRD SET OF CONDUCTORS ADHERING TO THE SURFACE OF A THIRD SUPPORT OF INSULATING MATERIAL, SAID LAST MENTIONED CONDUCTORS HAVING STRAIGHT AND PARALLEL PORTIONS, SAID STRAIGHT AND PARALLEL PORTIONS OF SAID THIRD SET BEING ARRANGED TO REGISTER RESPECTIVELY WITH THE STRAIGHT AND PARALLEL PORTIONS OF AT LEAST SELECTED CONDUCTORS OF THE FIRST SET AND AT LEAST SELECTED CONDUCTORS OF THE SECOND SET, AT LEAST PART OF CERTAIN OF SAID STRAIGHT AND PARALLEL CONDUCTOR PORTIONS BRIDGING A COMMON GAP BETWEEN PARTS OF THE RESPECTIVE SUPPORTS SO THAT THEY ARE NOT COVERED BY INSULATING MATERIAL WHEN IN CONTACT WITH THE RESPECTIVE CONDUCTOR ON ANOTHER SUPPORT, THE CONDUCTORS OF THE THIRD SET BEING APPLIED TO CONDUCTORS OF THE FIRST AND SECOND SETS, SO THAT THE STRAIGHT AND PARALLEL PORTIONS OF CONDUCTORS OF THE THIRD SET REGISTER RESPECTIVELY WITH THE STRAIGHT AND PARALLEL PORTIONS OF CONDUCTORS OF THE FIRST AND SECOND SETS WITHOUT INSULATING MATERIAL BETWEEN THE REGISTERING PORTIONS, THE REGISTERING CONDUCTOR PORTIONS BEING JOINED AT THE GAP TO ESTABLISH ELECTRICAL CONNECTIONS BETWEEN CONDUCTORS OF THE SETS.
Claim 2
Dependent Claim 226 words
A PRINTED ELECTRIC CIRCUIT COMPRISING A FIRST SET OF CONDUCTORS ADHERING TO THE SURFACE OF A FIRST SUPPORT OF INSULATING MATERIAL, SAID CONDUCTORS HAVING STRAIGHT AND PARRALLEL PORTIONS, A SECOND SET OF CONDUCTORS ADHERING TO THE SURFACE OF A SECOND SUPPORT OF INSULATING MATERIAL, SAID LATTER CONDUCTORS HAVING STRAIGHT AND PARALLEL PORTIONS, A THIRD SET OF CONDUCTORS ADHERING TO THE SURFACE OF A THIRD SUPPORT OF INSULATING MATERIAL, SAID LAST MENTIONED CONDUCTORS HAVING STRAIGHT AND PARALLEL PORTIONS, SAID STRAIGHT AND PARALLEL PORTIONS OF SAID THIRD SET BEING ARRANGED TO REGISTER RESPECTIVELY WITH THE STRAIGHT AND PARALLEL PORTIONS OF AT LEAST SELECTED CONDUCTORS OF THE FIRST SET AND AT LEAST SELECTED CONDUCTORS OF THE SECOND SET, AT LEAST PART OF CERTAIN OF SAID STRAIGHT AND PARALLEL CONDUCTOR PORTIONS BRIDGING A COMMON GAP BETWEEN PARTS OF THE RESPECTIVE SUPPORTS SO THAT THEY ARE NOT COVERED BY INSULATING MATERIAL WHEN IN CONTACT WITH THE RESPECTIVE CONDUCTOR ON ANOTHER SUPPORT, THE CONDUCTORS OF THE THIRD SET BEING APPLIED TO CONDUCTORS OF THE FIRST AND SECOND SETS, SO THAT THE STRAIGHT AND PARALLEL PORTIONS OF CONDUCTORS OF THE THIRD SET REGISTER RESPECTIVELY WITH THE STRAIGHT AND PARALLEL PORTIONS OF CONDUCTORS OF THE FIRST AND SECOND SETS WITHOUT INSULATING MATERIAL BETWEEN THE REGISTERING PORTIONS, THE REGISTERING CONDUCTOR PORTIONS BEING JOINED AT THE GAP TO ESTABLISH ELECTRICAL CONNECTIONS BETWEEN CONDUCTORS OF THE SETS.

References Cited (Backward Citations)

US2974284A Cited
US3030612A Cited
US3053929A Cited
US3159821A Cited
US2998475A Cited
US3196522A Cited
US3257649A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1972-04-14 1972-10-14 1973-04-15 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1976-04-14 1976-10-14 1977-04-15 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1980-04-14 1980-10-14 1981-04-15 $7700.00 Window Closed / Lapsed

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