Patent US3323880A successfully refreshed from Google Patents.
US3323880A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Beryllium-aluminum-magnesium composite
Assignee: Duracell Inc USA
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Filing: 1966-05-13
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Granted: 1967-06-06
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Expires: 1986-05-13
Abstract
No abstract record available.
Inventors
- 👤 Richard H Krock
- 👤 Earl I Larsen
- 👤 Clintford R Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:26
CPC Classifications
C; C22; C22C; C22C25/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
30 words
A TERNARY METAL COMPOSITE CONTAINING ABOUT 50 TO 85 PERCENT, BY WEIGHT, BERYLLIUM, ABOUT 13.5 TO 45 PERCENT, BY WEIGHT, ALUMINUM, AND ABOUT 1.5 TO 7.5 PERCENT, BY WEIGHT, MAGNESIUM.
Claim 2
Dependent Claim
30 words
A TERNARY METAL COMPOSITE CONTAINING ABOUT 50 TO 85 PERCENT, BY WEIGHT, BERYLLIUM, ABOUT 13.5 TO 45 PERCENT, BY WEIGHT, ALUMINUM, AND ABOUT 1.5 TO 7.5 PERCENT, BY WEIGHT, MAGNESIUM.
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) | 1970-06-05 | 1970-12-05 | 1971-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-06-05 | 1974-12-05 | 1975-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-06-05 | 1978-12-05 | 1979-06-06 | $7700.00 | Window Closed / Lapsed |