Patent US1978112A successfully refreshed from Google Patents.
US1978112A
Expired / Lapsed
US
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Nonseizing article of aluminum and method of producing the same
Assignee: Alcoa Corp
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Filing: 1932-02-01
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Granted: 1934-10-23
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Expires: 1952-02-01
Abstract
No abstract record available.
Inventors
- 👤 Seth G Malby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:57
CPC Classifications
C; C23; C23C; C23C22/00; C23C22/82; C23C22/83; Y; Y10; Y10S; Y10S411/00; Y10S411/914; Y10T; Y10T29/00; Y10T29/30; Y10T29/301; Y10T29/308; Y10T428/00; Y10T428/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1937-10-22 | 1938-04-23 | 1938-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1941-10-22 | 1942-04-23 | 1942-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1945-10-22 | 1946-04-23 | 1946-10-23 | $7700.00 | Window Closed / Lapsed |