Patent US1999042A successfully refreshed from Google Patents.
US1999042A
Expired / Lapsed
US
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Aluminum reflector surface and method of producing the same
Assignee: Alcoa Corp
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Filing: 1932-01-25
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Granted: 1935-04-23
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Expires: 1952-01-25
Abstract
No abstract record available.
Inventors
- 👤 Junius D Edwards
- 👤 Cyril S Taylor
- 👤 Wentz Welker Wallace
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:28
CPC Classifications
C; C23; C23F; C23F1/00; C22; C22C; C22C21/00; C22C21/02; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9265; Y10S428/927; Y10T; Y10T428/00; Y10T428/12; Y10T428/12993
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) | 1938-04-22 | 1938-10-22 | 1939-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1942-04-22 | 1942-10-22 | 1943-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1946-04-22 | 1946-10-22 | 1947-04-23 | $7700.00 | Window Closed / Lapsed |