US3488429A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multilayer printed circuits
Assignee: Individual
•
Filing: 1969-02-24
•
Granted: 1970-01-06
•
Expires: 1989-02-24
Abstract
No abstract record available.
Inventors
- 👤 Gerald Boucher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:24
CPC Classifications
H; H05; H05K; H05K3/00; H05K3/46; H05K3/4644; H05K3/4647; H05K2201/00; H05K2201/03; H05K2201/0332; H05K2201/0335; H05K2201/0355; H05K2203/00; H05K2203/03; H05K2203/0369; H05K2203/06; H05K2203/068; H05K2203/07; H05K2203/0703; H05K2203/0733
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2721822A
Cited
US3040213A
Cited
US2981868A
Cited
US3171756A
Cited
US3217089A
Cited
FR1345163A
Cited
US3352730A
Cited
US3350498A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-01-05 | 1973-07-07 | 1974-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-05 | 1977-07-07 | 1978-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-05 | 1981-07-07 | 1982-01-06 | $7700.00 | Window Closed / Lapsed |