Patent US3414785A successfully refreshed from Google Patents.
US2284504A
Expired / Lapsed
US
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Composite laminated plate stock
Assignee: American Optical Corp
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Filing: 1939-05-05
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Granted: 1942-05-26
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Expires: 1959-05-05
Abstract
No abstract record available.
Inventors
- 👤 William J Wrighton
- 👤 Tracy C Jarrett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:41
CPC Classifications
B; B23; B23K; B23K20/00; B23K20/02; B23K2103/00; B23K2103/16; B23K2103/166; B23K2103/172; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9335; Y10S428/939; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12771; Y10T428/12861; Y10T428/12868; Y10T428/12882
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) | 1945-05-25 | 1945-11-24 | 1946-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1949-05-25 | 1949-11-24 | 1950-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1953-05-25 | 1953-11-24 | 1954-05-26 | $7700.00 | Window Closed / Lapsed |