US3471631A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fabrication of microminiature multilayer circuit boards
Assignee: United States Department of the Air Force
•
Filing: 1968-04-03
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Granted: 1969-10-07
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Expires: 1988-04-03
Abstract
No abstract record available.
Inventors
- 👤 Leo J Quintana
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:04
CPC Classifications
H; H05; H05K; H05K3/00; H05K3/0011; H05K3/0017; H05K3/002; H05K1/00; H05K1/02; H05K1/11; H05K1/115; H05K3/46; H05K3/4644; H05K3/4652; H05K2201/00; H05K2201/03; H05K2201/0332; H05K2201/0335; H05K2201/0355; H05K2201/09; H05K2201/09209; H05K2201/095; H05K2201/09509; H05K2201/0959; H05K2201/09627; H05K2203/00; H05K2203/03; H05K2203/0346; H05K2203/0353; H05K2203/05; H05K2203/0548; H05K2203/0554; H05K3/0055; H05K3/0094; H05K3/10; H05K3/18; H05K3/181
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3264402A
Cited
US3319317A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-06 | 1973-04-07 | 1973-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-06 | 1977-04-07 | 1977-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-06 | 1981-04-07 | 1981-10-07 | $7700.00 | Window Closed / Lapsed |