US1528147A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stair nosing
Assignee: DURKEE MANUFACTURING Co
•
Filing: 1923-03-26
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Granted: 1925-03-03
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Expires: 1943-03-26
Abstract
No abstract record available.
Inventors
- 👤 George A Durkee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:37
CPC Classifications
E; E04; E04F; E04F11/00; E04F11/02; E04F11/104; E04F11/16; E04F11/163
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) | 1928-03-02 | 1928-09-01 | 1929-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1932-03-02 | 1932-09-01 | 1933-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1936-03-02 | 1936-09-01 | 1937-03-03 | $7700.00 | Window Closed / Lapsed |