US2829460A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Etching method and etching plate
Assignee: Individual
•
Filing: 1953-12-22
•
Granted: 1958-04-08
•
Expires: 1973-12-22
Abstract
No abstract record available.
Inventors
- 👤 Marcel J E Golay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:38
CPC Classifications
C; C23; C23F; C23F1/00; C23F1/02; C23F1/04; H; H10; H10P; H10P50/00; H10P50/69; H10P50/691; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9335; Y10S428/934
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1311275A
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US2338091A
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US2395448A
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US2257143A
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US2291854A
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US2282203A
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US2332003A
Cited
US2421607A
Cited
US2569752A
Cited
FR1036925A
Cited
US2647864A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-04-07 | 1961-10-07 | 1962-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-07 | 1965-10-07 | 1966-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-07 | 1969-10-07 | 1970-04-08 | $7700.00 | Window Closed / Lapsed |