US2828080A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Railroad crossing structure
Assignee: Individual
•
Filing: 1954-05-10
•
Granted: 1958-03-25
•
Expires: 1974-05-10
Abstract
No abstract record available.
Inventors
- 👤 Charles H Rennels
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:45
CPC Classifications
E; E01; E01C; E01C9/00; E01C9/04
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US862898A
Cited
FR563149A
Cited
US1548057A
Cited
US1755698A
Cited
US2317963A
Cited
US1932895A
Cited
US1986999A
Cited
US1975391A
Cited
US2076338A
Cited
US2225496A
Cited
US2337525A
Cited
US2424916A
Cited
FR927833A
Cited
US2599230A
Cited
US2737693A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-03-24 | 1961-09-23 | 1962-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-24 | 1965-09-23 | 1966-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-24 | 1969-09-23 | 1970-03-25 | $7700.00 | Window Closed / Lapsed |