Patent US1649206A successfully refreshed from Google Patents.
US1649206A
Expired / Lapsed
US
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Stepladder
Assignee: Individual
•
Filing: 1927-05-18
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Granted: 1927-11-15
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Expires: 1947-05-18
Abstract
No abstract record available.
Inventors
- 👤 Frederick G Yawman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:54
CPC Classifications
E; E06; E06C; E06C7/00; E06C7/08; E06C7/082; E06C7/083; E06C7/088; F; F16; F16B; F16B9/00; F16B9/05; Y; Y10; Y10T; Y10T403/00; Y10T403/33
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) | 1930-11-14 | 1931-05-16 | 1931-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1934-11-14 | 1935-05-16 | 1935-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1938-11-14 | 1939-05-16 | 1939-11-15 | $7700.00 | Window Closed / Lapsed |