US2767682A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vaporizing apparatus for producing selenium rectifiers
Assignee: Syntron Co
•
Filing: 1953-06-26
•
Granted: 1956-10-23
•
Expires: 1973-06-26
Abstract
No abstract record available.
Inventors
- 👤 Smith Cleveland Scudder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:14
CPC Classifications
H; H10; H10D; H10D48/00; H10D48/01; H10D48/04; H10D48/043; H10D48/0431; C; C23; C23C; C23C14/00; C23C14/22
Claims Analysis
Total Claims: 0
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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) | 1959-10-23 | 1960-04-23 | 1960-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-23 | 1964-04-23 | 1964-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-23 | 1968-04-23 | 1968-10-23 | $7700.00 | Window Closed / Lapsed |