Patent US1664080A successfully refreshed from Google Patents.
US1664080A
Expired / Lapsed
US
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Ornamental iron stair-rail structure
Assignee: Individual
•
Filing: 1926-05-06
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Granted: 1928-03-27
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Expires: 1946-05-06
Abstract
No abstract record available.
Inventors
- 👤 Robert L Mapson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:09
CPC Classifications
E; E04; E04F; E04F11/00; E04F11/18; E04F11/181; E04F11/1817; E04F11/1834
Claims Analysis
Total Claims: 0
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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) | 1931-03-27 | 1931-09-26 | 1932-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1935-03-27 | 1935-09-26 | 1936-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1939-03-27 | 1939-09-26 | 1940-03-27 | $7700.00 | Window Closed / Lapsed |