Patent US2766944A successfully refreshed from Google Patents.
Patent US2488313A successfully refreshed from Google Patents.
US2488313A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Grade crossing gate
Assignee: WESTERN RAILROAD SUPPLY Co
•
Filing: 1944-09-15
•
Granted: 1949-11-15
•
Expires: 1964-09-15
Abstract
No abstract record available.
Inventors
- 👤 Miskelly Samuel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:38
CPC Classifications
B; B61; B61L; B61L29/00; B61L29/24; B61L29/243
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US940786A
Cited
US1384544A
Cited
US1629605A
Cited
US1773243A
Cited
US2010925A
Cited
US1969286A
Cited
US2353942A
Cited
US2295419A
Cited
US2267632A
Cited
US2362710A
Cited
US2372579A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-11-14 | 1953-05-16 | 1953-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-11-14 | 1957-05-16 | 1957-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-11-14 | 1961-05-16 | 1961-11-15 | $7700.00 | Window Closed / Lapsed |