Patent US3521161A successfully refreshed from Google Patents.
US3521161A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for displaying wiring instructions and checking connections made in wiring electrical circuitry
Assignee: Mitsubishi Electric Corp
•
Filing: 1968-06-11
•
Granted: 1970-07-21
•
Expires: 1988-06-11
Abstract
No abstract record available.
Inventors
- 👤 Kiyoshi Kurata
- 👤 Koichi Shimizu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:34
CPC Classifications
H; H05; H05K; H05K13/00; H05K13/06; H05K13/065; G; G01; G01R; G01R31/00; G01R31/50; G01R31/66; G01R31/67; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49004; Y10T29/49764; Y10T29/53; Y10T29/53004; Y10T29/53017
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-07-20 | 1974-01-19 | 1974-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-07-20 | 1978-01-19 | 1978-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-07-20 | 1982-01-19 | 1982-07-21 | $7700.00 | Window Closed / Lapsed |