Patent US3514575A successfully refreshed from Google Patents.
US3514575A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal-evaporating source
Assignee: GTE Sylvania Inc
•
Filing: 1967-08-10
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Granted: 1970-05-26
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Expires: 1987-08-10
Abstract
No abstract record available.
Inventors
- 👤 Harold H Hall
- 👤 Edmund M Passmore
- 👤 Wilfrid G Matheson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:04
CPC Classifications
C; C23; C23C; C23C14/00; C23C14/22; C23C14/24; C23C14/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2772318A
Cited
US2757788A
Cited
US2903544A
Cited
US3216710A
Cited
US3274374A
Cited
US3373260A
Cited
US3405251A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-05-25 | 1973-11-24 | 1974-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-05-25 | 1977-11-24 | 1978-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-05-25 | 1981-11-24 | 1982-05-26 | $7700.00 | Window Closed / Lapsed |