US2416883A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rail bond or the like
Assignee: Copperweld Steel Co
•
Filing: 1944-04-03
•
Granted: 1947-03-04
•
Expires: 1964-04-03
Abstract
No abstract record available.
Inventors
- 👤 Selquist Rolf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:04
CPC Classifications
B; B60; B60M; B60M5/00; F; F16; F16B; F16B2200/00; F16B2200/20; F16B2200/30; Y; Y10; Y10T; Y10T403/00; Y10T403/49; Y10T403/4966
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US650861A
Cited
US1665347A
Cited
US2121769A
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US2162164A
Cited
US2176245A
Cited
US2232999A
Cited
US2306642A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-03-03 | 1950-09-02 | 1951-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-03-03 | 1954-09-02 | 1955-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-03-03 | 1958-09-02 | 1959-03-04 | $7700.00 | Window Closed / Lapsed |