US3457092A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Granular electrically insulating material of magnesia and fused zircon
Assignee: Saint Gobain Abrasives Inc
•
Filing: 1966-10-25
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Granted: 1969-07-22
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Expires: 1986-10-25
Abstract
No abstract record available.
Inventors
- 👤 Reino O Tervo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:19
CPC Classifications
H; H05; H05B; H05B3/00; H05B3/40; H05B3/42; H05B3/48; C; C04; C04B; C04B35/00; C04B35/01; C04B35/48; H01; H01B; H01B3/00; H01B3/02; H01B3/025; H01B3/10; H05B3/10; H05B3/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2669636A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-07-21 | 1973-01-20 | 1973-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-21 | 1977-01-20 | 1977-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-21 | 1981-01-20 | 1981-07-22 | $7700.00 | Window Closed / Lapsed |