Patent US3451813A successfully refreshed from Google Patents.
US3451813A
Expired / Lapsed
US
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Method of making printed circuits
Assignee: Monsanto Co
•
Filing: 1967-10-03
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Granted: 1969-06-24
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Expires: 1987-10-03
Abstract
No abstract record available.
Inventors
- 👤 Layton C Kinney
- 👤 Edwin H Tompkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:01
CPC Classifications
H; H05; H05K; H05K3/00; H05K3/10; H05K3/105; H05K3/106; Y; Y10; Y10S; Y10S428/00; Y10S428/901
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1939232A
Cited
US2019737A
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US2698812A
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US2914404A
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US2987456A
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US3056881A
Cited
US3234044A
Cited
US3347702A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-23 | 1972-12-23 | 1973-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-23 | 1976-12-23 | 1977-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-23 | 1980-12-23 | 1981-06-24 | $7700.00 | Window Closed / Lapsed |