Patent US2757443A successfully refreshed from Google Patents.
US2757443A
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US
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Method of making printed circuits
Assignee: Erie Resistor Corp
•
Filing: 1953-01-21
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Granted: 1956-08-07
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Expires: 1973-01-21
Abstract
No abstract record available.
Inventors
- 👤 Oliver I Steigerwalt
- 👤 Howard I Oshry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:45
CPC Classifications
H; H05; H05K; H05K3/00; H05K3/02; H05K3/04; H05K3/045; H05K2201/00; H05K2201/09; H05K2201/09009; H05K2201/09045; H05K2203/00; H05K2203/01; H05K2203/0104; H05K2203/0108; H05K2203/02; H05K2203/025; H05K3/10; H05K3/107; H05K3/38; H05K3/386; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1039; Y10T156/1052; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49117; Y10T29/49124; Y10T29/49155; Y10T29/49158
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2288735A
Cited
DE596830C
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US2055570A
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US2427144A
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US2441960A
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US2447541A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-08-07 | 1960-02-06 | 1960-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-08-07 | 1964-02-06 | 1964-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-08-07 | 1968-02-06 | 1968-08-07 | $7700.00 | Window Closed / Lapsed |