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US2417672A
Expired / Lapsed
US
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Way guard structure
Assignee: Kearney and Trecker Corp
•
Filing: 1944-07-27
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Granted: 1947-03-18
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Expires: 1964-07-27
Abstract
No abstract record available.
Inventors
- 👤 Joseph B Armitage
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 17:01
CPC Classifications
B; B23; B23Q; B23Q11/00; B23Q11/08; B23Q11/085
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US848578A
Cited
US1679912A
Cited
US1937985A
Cited
US1895122A
Cited
US2190213A
Cited
US2246199A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-03-17 | 1950-09-16 | 1951-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-03-17 | 1954-09-16 | 1955-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-03-17 | 1958-09-16 | 1959-03-18 | $7700.00 | Window Closed / Lapsed |