Patent US3528808A successfully refreshed from Google Patents.
US3528808A
Expired / Lapsed
US
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Monocarbide reinforced eutectic alloys and articles
Assignee: RTX Corp
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Filing: 1967-10-11
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Granted: 1970-09-15
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Expires: 1987-10-11
Abstract
No abstract record available.
Inventors
- 👤 Franklin D Lemkey
- 👤 Earl R Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:49
CPC Classifications
C; C22; C22C; C22C47/00; C30; C30B; C30B21/00; C30B21/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-09-14 | 1974-03-16 | 1974-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-14 | 1978-03-16 | 1978-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-14 | 1982-03-16 | 1982-09-15 | $7700.00 | Window Closed / Lapsed |