Patent US1575208A successfully refreshed from Google Patents.
US1575208A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal ladder
Assignee: Individual
•
Filing: 1922-05-08
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Granted: 1926-03-02
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Expires: 1942-05-08
Abstract
No abstract record available.
Inventors
- 👤 Fredrick L Jacobs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:20
CPC Classifications
E; E06; E06C; E06C7/00; E06C7/08; E06C7/082; E06C7/088; Y; Y10; Y10T; Y10T403/00; Y10T403/33; Y10T403/71; Y10T403/7129; Y10T403/7135
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) | 1929-03-01 | 1929-08-31 | 1930-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1933-03-01 | 1933-08-31 | 1934-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1937-03-01 | 1937-08-31 | 1938-03-02 | $7700.00 | Window Closed / Lapsed |