US2731343A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Copper base alloy
Assignee: Individual
•
Filing: 1952-07-25
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Granted: 1956-01-17
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Expires: 1972-07-25
Abstract
No abstract record available.
Inventors
- 👤 Edward J Dunn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:34
CPC Classifications
C; C22; C22C; C22C9/00; C22C9/01
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
20 words
A COPPER BASE ALLOY CONSISTING OF 6.6 TO 8.6 PER CENT ALUMINUM, 2.7 TO 10% LEAD AND THE BALANCE COPPER.
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) | 1959-01-16 | 1959-07-18 | 1960-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-16 | 1963-07-18 | 1964-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-16 | 1967-07-18 | 1968-01-17 | $7700.00 | Window Closed / Lapsed |