Patent US2114556A successfully refreshed from Google Patents.
US2114556A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Floor construction
Assignee: Western Railway Equipment Co
•
Filing: 1936-05-06
•
Granted: 1938-04-19
•
Expires: 1956-05-06
Abstract
No abstract record available.
Inventors
- 👤 Sterling H Campbell
- 👤 Frank H Pietzsch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:06
CPC Classifications
E; E04; E04B; E04B5/00; E04B5/02; E04B5/10; Y; Y10; Y10T; Y10T403/00; Y10T403/49; Y10T403/4974; Y10T403/71; Y10T403/7117
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1941-04-18 | 1941-10-18 | 1942-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1945-04-18 | 1945-10-18 | 1946-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1949-04-18 | 1949-10-18 | 1950-04-19 | $7700.00 | Window Closed / Lapsed |