US2838958A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: United States Steel Corp
•
Filing: 1954-05-03
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Granted: 1958-06-17
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Expires: 1974-05-03
Abstract
No abstract record available.
Inventors
- 👤 William J Redman
- 👤 John S Fuller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:40
CPC Classifications
F; F16; F16H; F16H57/00; F16H57/02; F16H57/031; F16H21/00; F16H21/10; F16H21/16; F16H21/18; F16H21/22; F16H21/24; F16H37/00; F16H37/12; F16H37/124; F16H57/028; F16H2057/0093; F16H2057/02039; F16H2057/02069; F16H2057/02086; F16H2057/02091; F16H57/023; F16H2057/0235; Y; Y10; Y10T; Y10T74/00; Y10T74/21; Y10T74/2186
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE514580C
Cited
US2133048A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-16 | 1961-12-16 | 1962-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-16 | 1965-12-16 | 1966-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-16 | 1969-12-16 | 1970-06-17 | $7700.00 | Window Closed / Lapsed |