US3390992A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Non-etching circuit fabrication
Assignee: Boeing North American Inc
•
Filing: 1964-06-15
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Granted: 1968-07-02
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Expires: 1984-06-15
Abstract
No abstract record available.
Inventors
- 👤 Anthony G Valles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:33
CPC Classifications
H; H05; H05K; H05K3/00; H05K3/10; H05K3/102; G; G03; G03F; G03F7/00; G03F7/004; G03F7/016; G03F7/26; G03F7/28; H01; H01B; H01B1/00; H05K1/00; H05K1/02; H05K1/03; H05K1/0306; H05K2203/00; H05K2203/05; H05K2203/0502; H05K2203/0525
Claims Analysis
Total Claims: 0
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US3320657A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-07-02 | 1972-01-01 | 1972-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-02 | 1976-01-01 | 1976-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-02 | 1980-01-01 | 1980-07-02 | $7700.00 | Window Closed / Lapsed |