US3396335A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of testing printed circuit conductors
Assignee: Circuit Research Corp
•
Filing: 1966-08-26
•
Granted: 1968-08-06
•
Expires: 1986-08-26
Abstract
No abstract record available.
Inventors
- 👤 Robert P Burr
- 👤 Robert L Swiggett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:56
CPC Classifications
G; G01; G01R; G01R31/00; G01R31/28; G01R31/2801; G01R31/2805
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
41 words
THE METHOD OF TESTING PRINTED CIRCUIT CONDUCTORS TO INDICATE LIMITATIONS ON THE CURRENT-CARRYING CAPACITY THEREOF COMPRISING: MAINTAINING A SELF-SUPPORTING, HEAT-SENSITIVE SHEET, WHICH CHANGES COLOR IN LOCAL AREAS IN RESPONSE TO LOCAL TEMPERATURE RISES, IN INTIMATE CONTACT WITH A PRINTED CIRCUIT CONDUCTOR;
Claim 2
Independent Claim
41 words
THE METHOD OF TESTING PRINTED CIRCUIT CONDUCTORS TO INDICATE LIMITATIONS ON THE CURRENT-CARRYING CAPACITY THEREOF COMPRISING: MAINTAINING A SELF-SUPPORTING, HEAT-SENSITIVE SHEET, WHICH CHANGES COLOR IN LOCAL AREAS IN RESPONSE TO LOCAL TEMPERATURE RISES, IN INTIMATE CONTACT WITH A PRINTED CIRCUIT CONDUCTOR;
References Cited (Backward Citations)
US2637657A
Cited
US2673325A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-08-06 | 1972-02-05 | 1972-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-08-06 | 1976-02-05 | 1976-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-08-06 | 1980-02-05 | 1980-08-06 | $7700.00 | Window Closed / Lapsed |