US2738730A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for forming engraved image-reproducing plates
Assignee: Fairchild Semiconductor Corp
•
Filing: 1952-07-01
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Granted: 1956-03-20
•
Expires: 1972-07-01
Abstract
No abstract record available.
Inventors
- 👤 John A Boyajean
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:44
CPC Classifications
B; B41; B41C; B41C1/00; B41C1/02; B41C1/04; B41C1/05; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24479; Y10T428/2457
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US815002A
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US2238601A
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US2575546A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-03-20 | 1959-09-19 | 1960-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-03-20 | 1963-09-19 | 1964-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-03-20 | 1967-09-19 | 1968-03-20 | $7700.00 | Window Closed / Lapsed |