Patent US3494768A successfully refreshed from Google Patents.
US3494768A
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US
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Condensed vapor phase photoetching of surfaces
Assignee: General Electric Co
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Filing: 1967-05-29
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Granted: 1970-02-10
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Expires: 1987-05-29
Abstract
No abstract record available.
Inventors
- 👤 Donald L Schaefer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:58
CPC Classifications
G; G03; G03D; G03D7/00; C; C03; C03C; C03C15/00; C03C23/00; G03F; G03F7/00; G03F7/004; G03F7/0041
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2804388A
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US2875046A
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US2841477A
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US3122463A
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US3095332A
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US3095341A
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US3271180A
Cited
US3346384A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-09 | 1973-08-11 | 1974-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-09 | 1977-08-11 | 1978-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-09 | 1981-08-11 | 1982-02-10 | $7700.00 | Window Closed / Lapsed |