Patent US3518209A successfully refreshed from Google Patents.
US3518209A
Expired / Lapsed
US
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Semiconductive glasses
Assignee: Bourns Inc
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Filing: 1967-07-12
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Granted: 1970-06-30
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Expires: 1987-07-12
Abstract
No abstract record available.
Inventors
- 👤 Jason D Provance
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:54
CPC Classifications
C; C03; C03C; C03C10/00; C03C10/0054; C03C3/00; C03C3/04; C03C3/062; C03C3/07; C03C3/072; C03C3/074; C03C3/0745; C03C3/12; C03C3/16; C03C3/21; H; H01; H01B; H01B1/00; H01B1/06; H01B1/08; H01B1/14; H01B1/16
Claims Analysis
Total Claims: 0
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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) | 1973-06-29 | 1973-12-29 | 1974-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-06-29 | 1977-12-29 | 1978-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-06-29 | 1981-12-29 | 1982-06-30 | $7700.00 | Window Closed / Lapsed |