US2440254A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chain and method and apparatus for forming same
Assignee: UNITED STEEL BARREL CO
•
Filing: 1944-07-14
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Granted: 1948-04-27
•
Expires: 1964-07-14
Abstract
No abstract record available.
Inventors
- 👤 Howard W Dodson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 05:54
CPC Classifications
B; B21; B21L; B21L15/00; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49908; Y10T29/49915; Y10T29/49922; Y10T29/49936
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1833444A
Cited
US1962291A
Cited
US1972297A
Cited
US2260630A
Cited
US2260629A
Cited
US2242164A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-04-27 | 1951-10-27 | 1952-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-04-27 | 1955-10-27 | 1956-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-04-27 | 1959-10-27 | 1960-04-27 | $7700.00 | Window Closed / Lapsed |