US3457638A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of printed circuits
Assignee: BAC AND BRITISH AEROSPACE
•
Filing: 1967-02-27
•
Granted: 1969-07-29
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Expires: 1987-02-27
Abstract
No abstract record available.
Inventors
- 👤 Leonard J W Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:30
CPC Classifications
H; H05; H05K; H05K3/00; H05K3/40; H05K3/42; H05K3/425; H05K3/428; H05K3/427; H05K2201/00; H05K2201/01; H05K2201/0137; H05K2201/0166; H05K2201/09; H05K2201/09209; H05K2201/09654; H05K2201/09736; H05K2203/00; H05K2203/01; H05K2203/0104; H05K2203/0143; H05K2203/05; H05K2203/0502; H05K2203/0542; H05K2203/0562; H05K2203/0565; H05K2203/0577; H05K2203/13; H05K2203/1377; H05K2203/1383; H05K2203/1388; H05K2203/14; H05K2203/1415; H05K3/22; H05K3/24; H05K3/243; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49117; Y10T29/49124; Y10T29/49155; Y10T29/49165
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3370351A
Cited
US3340607A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-07-28 | 1973-01-27 | 1973-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-28 | 1977-01-27 | 1977-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-28 | 1981-01-27 | 1981-07-29 | $7700.00 | Window Closed / Lapsed |