US2590929A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Railing
Assignee: Individual
•
Filing: 1947-11-19
•
Granted: 1952-04-01
•
Expires: 1967-11-19
Abstract
No abstract record available.
Inventors
- 👤 William W Bush
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 17:18
CPC Classifications
E; E04; E04F; E04F11/00; E04F11/18; E04F11/181
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US297295A
Cited
US888905A
Cited
US1376150A
Cited
US1725507A
Cited
US1895186A
Cited
US1761508A
Cited
US2218954A
Cited
US2407721A
Cited
US2431546A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-04-01 | 1955-10-01 | 1956-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-01 | 1959-10-01 | 1960-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-01 | 1963-10-01 | 1964-04-01 | $7700.00 | Window Closed / Lapsed |