US2847303A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Copper-base alloys
Assignee: GEORGES RENE JEAN LAFEUILLE
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Filing: 1957-05-21
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Granted: 1958-08-12
•
Expires: 1977-05-21
Abstract
No abstract record available.
Inventors
- 👤 Pruna Matei
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 01:40
CPC Classifications
C; C22; C22C; C22C9/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
8 words
A COPPER-BASE ALLOY WHICH CONSISTS OF, BY WEIGHT:
References Cited (Backward Citations)
US2097816A
Cited
US2172968A
Cited
GB503753A
Cited
US2195433A
Cited
US2331088A
Cited
US2479311A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-08-11 | 1962-02-10 | 1962-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-11 | 1966-02-10 | 1966-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-11 | 1970-02-10 | 1970-08-12 | $7700.00 | Window Closed / Lapsed |