Patent US2422457A successfully refreshed from Google Patents.
Patent US2788527A successfully refreshed from Google Patents.
US2641675A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Printed electrical conductor
Assignee: GTE Sylvania Inc
•
Filing: 1950-01-17
•
Granted: 1953-06-09
•
Expires: 1970-01-17
Abstract
No abstract record available.
Inventors
- 👤 Wilson H Hannahs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:10
CPC Classifications
H; H05; H05K; H05K1/00; H05K1/02; H05K1/09; H05K1/092; H05B; H05B3/00; H05B3/20; H05B3/22; H05B3/26; H05K1/0213; H05K1/0263; H05K1/0265; H05K2201/00; H05K2201/09; H05K2201/09209; H05K2201/09218; H05K2201/09236; H05K2201/09254; H05K2201/09654; H05K2201/0979; Y; Y10; Y10S; Y10S428/00; Y10S428/901; Y10T; Y10T428/00; Y10T428/12; Y10T428/12389; Y10T428/12396
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US636203A
Cited
DE634073C
Cited
US2165970A
Cited
US1963554A
Cited
US2111506A
Cited
US2273941A
Cited
US2441960A
Cited
US2389018A
Cited
US2447541A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-08 | 1956-12-08 | 1957-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-08 | 1960-12-08 | 1961-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-08 | 1964-12-08 | 1965-06-09 | $7700.00 | Window Closed / Lapsed |