Patent US3515840A successfully refreshed from Google Patents.
US3515840A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diode sealer
Assignee: GTI Corp
•
Filing: 1965-10-20
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Granted: 1970-06-02
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Expires: 1985-10-20
Abstract
No abstract record available.
Inventors
- 👤 Sydney Dix
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:51
CPC Classifications
H; H10; H10P; H10P72/00; H10P72/04; H10P72/0441; B; B23; B23K; B23K1/00; B23K1/005; B23K1/0056; B23K1/008; F; F27; F27D; F27D11/00; F27D11/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2001538A
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US2537289A
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US2447960A
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US2736847A
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US2813191A
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US3030704A
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US3031561A
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US3271208A
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US3220380A
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US3189494A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-06-01 | 1973-12-01 | 1974-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-06-01 | 1977-12-01 | 1978-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-06-01 | 1981-12-01 | 1982-06-02 | $7700.00 | Window Closed / Lapsed |