US2424916A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Base plate for frogs and crossings
Assignee: Bridgestone Firestone Inc
•
Filing: 1943-08-26
•
Granted: 1947-07-29
•
Expires: 1963-08-26
Abstract
No abstract record available.
Inventors
- 👤 Theodore W Stedman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:30
CPC Classifications
E; E01; E01B; E01B7/00; E01B7/22; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24273; Y10T428/24298; Y10T428/31504; Y10T428/31826
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US381056A
Cited
US872473A
Cited
US896154A
Cited
US1423573A
Cited
US1792620A
Cited
US1877064A
Cited
US1972825A
Cited
US1892943A
Cited
US2155155A
Cited
US2146341A
Cited
US2167716A
Cited
US2279110A
Cited
US2371927A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-07-28 | 1951-01-27 | 1951-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-07-28 | 1955-01-27 | 1955-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-07-28 | 1959-01-27 | 1959-07-29 | $7700.00 | Window Closed / Lapsed |