US2538985A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Roll
Assignee: Lukens Steel Co
•
Filing: 1947-01-10
•
Granted: 1951-01-23
•
Expires: 1967-01-10
Abstract
No abstract record available.
Inventors
- 👤 George L Snyder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:36
CPC Classifications
F; F28; F28F; F28F5/00; F28F5/02; B; B29; B29B; B29B7/00; B29B7/30; B29B7/58; B29B7/62; B29B7/625; D; D06; D06C; D06C15/00; D06C15/08; D21; D21F; D21F5/00; D21F5/02; Y; Y10; Y10S; Y10S165/00; Y10S165/135; Y10S165/139; Y10S165/156; Y10S165/159; Y10S165/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US311913A
Cited
US550988A
Cited
US1109977A
Cited
US1586425A
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US1664907A
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US1768156A
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GB503630A
Cited
US2412733A
Cited
US2374745A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-01-22 | 1954-07-24 | 1955-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-01-22 | 1958-07-24 | 1959-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-01-22 | 1962-07-24 | 1963-01-23 | $7700.00 | Window Closed / Lapsed |