US2502855A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preoxidation of stainless steel
Assignee: GTE Sylvania Inc
•
Filing: 1944-10-18
•
Granted: 1950-04-04
•
Expires: 1964-10-18
Abstract
No abstract record available.
Inventors
- 👤 Walter E Kingston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:30
CPC Classifications
C; C03; C03C; C03C27/00; C03C27/04; C03C27/042; C03C27/046
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US387046A
Cited
US1467174A
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AT114649B
Cited
US1787977A
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US2065404A
Cited
US2110893A
Cited
US2227156A
Cited
US2240063A
Cited
US2343038A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-04-03 | 1953-10-03 | 1954-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-04-03 | 1957-10-03 | 1958-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-04-03 | 1961-10-03 | 1962-04-04 | $7700.00 | Window Closed / Lapsed |