US2503571A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for coating surfaces by thermal vaporization at atmospheric pressure
Assignee: AT&T Inc
•
Filing: 1947-05-02
•
Granted: 1950-04-11
•
Expires: 1967-05-02
Abstract
No abstract record available.
Inventors
- 👤 Herman G Wehe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 02:40
CPC Classifications
C; C23; C23C; C23C14/00; C23C14/22; C23C14/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2074281A
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US2402269A
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US2384500A
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US2426377A
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US2440135A
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US2423051A
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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) | 1953-04-10 | 1953-10-10 | 1954-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-04-10 | 1957-10-10 | 1958-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-04-10 | 1961-10-10 | 1962-04-11 | $7700.00 | Window Closed / Lapsed |