US2469575A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tramway
Assignee: Sears Roebuck and Co
•
Filing: 1944-04-19
•
Granted: 1949-05-10
•
Expires: 1964-04-19
Abstract
No abstract record available.
Inventors
- 👤 Hurley D Ralston
- 👤 Reuben A Pearson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 02:02
CPC Classifications
B; B65; B65G; B65G35/00; B65G35/06; E; E01; E01B; E01B25/00; E01B25/22; E01B25/26
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US592433A
Cited
US378511A
Cited
US878135A
Cited
GB191228636A
Cited
US1287759A
Cited
US1541457A
Cited
US1746658A
Cited
US1612374A
Cited
US1900867A
Cited
US2053969A
Cited
US1775799A
Cited
US2172154A
Cited
US2174260A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-05-09 | 1952-11-08 | 1953-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-05-09 | 1956-11-08 | 1957-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-05-09 | 1960-11-08 | 1961-05-10 | $7700.00 | Window Closed / Lapsed |