US3705047A
Expired / Lapsed
US
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Method of repairing electrically conducting frit circuits
Assignee: Pilkington North America Inc
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Filing: 1969-05-23
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Granted: 1972-12-05
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Expires: 1989-05-23
Abstract
Abstract METHODS OF REPAIRING OR RESTORING ELECTRICAL HEATING CIRCUITS COMPOSED OF ELECTRICALLY CONDUCTING METAL CONTAINING FRIT LINES FIRED ON A VITREOUS SUBSTRATE, WHICH LINES CONTAIN CRACKS OR DISCONTINUITIES THEREIN THAT RENDER SUCH LINES NONCONDUCTIVE.
Inventors
- 👤 James G Marriott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 01:50
CPC Classifications
H; H05; H05B; H05B3/00; H05B3/84; H05B2203/00; H05B2203/016; H05B2203/017; H05K; H05K1/00; H05K1/02; H05K1/09; H05K1/092; H05K3/00; H05K3/22; H05K3/225; Y; Y10; Y10S; Y10S428/00; Y10S428/901; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49082; Y10T29/49083; Y10T29/49099; Y10T29/49718; Y10T29/49748; Y10T428/00; Y10T428/20
Claims Analysis
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-12-05 | 1976-06-05 | 1976-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-05 | 1980-06-05 | 1980-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-05 | 1984-06-05 | 1984-12-05 | $7700.00 | Window Closed / Lapsed |