Patent US3873956A successfully refreshed from Google Patents.
US2654579A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Railing
Assignee: Individual
•
Filing: 1950-02-25
•
Granted: 1953-10-06
•
Expires: 1970-02-25
Abstract
No abstract record available.
Inventors
- 👤 Leroy W Cremens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:57
CPC Classifications
E; E04; E04F; E04F11/00; E04F11/18; E04F11/181; Y; Y10; Y10T; Y10T403/00; Y10T403/33
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-10-05 | 1957-04-06 | 1957-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-10-05 | 1961-04-06 | 1961-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-10-05 | 1965-04-06 | 1965-10-06 | $7700.00 | Window Closed / Lapsed |