Patent US3509624A successfully refreshed from Google Patents.
US3509624A
Expired / Lapsed
US
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Method of making multilayer printed circuits
Assignee: Lockheed Martin Corp
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Filing: 1967-09-11
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Granted: 1970-05-05
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Expires: 1987-09-11
Abstract
No abstract record available.
Inventors
- 👤 Gerald Boucher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:20
CPC Classifications
H; H05; H05K; H05K3/00; H05K3/40; H05K3/4092; H05K3/4007; H05K3/4015; H05K2201/00; H05K2201/09; H05K2201/09209; H05K2201/09654; H05K2201/09754; Y; Y10; Y10S; Y10S205/00; Y10S205/92; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49117; Y10T29/49124; Y10T29/49155; Y10T29/49156; Y10T29/4981; Y10T29/4998; Y10T29/49982; Y10T29/49986
Claims Analysis
Total Claims: 0
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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) | 1973-05-04 | 1973-11-03 | 1974-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-05-04 | 1977-11-03 | 1978-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-05-04 | 1981-11-03 | 1982-05-05 | $7700.00 | Window Closed / Lapsed |