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US2184486A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stepladder, trestle, and the like
Assignee: Individual
•
Filing: 1937-03-19
•
Granted: 1939-12-26
•
Expires: 1957-03-19
Abstract
No abstract record available.
Inventors
- 👤 Chew William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:08
CPC Classifications
E; E06; E06C; E06C7/00; E06C7/42; E06C7/44; E06C1/00; E06C1/02; E06C1/14; E06C1/16; E06C1/20; Y; Y10; Y10T; Y10T24/00; Y10T24/44; Y10T24/44966; Y10T24/44974
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) | 1942-12-25 | 1943-06-26 | 1943-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-12-25 | 1947-06-26 | 1947-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-12-25 | 1951-06-26 | 1951-12-26 | $7700.00 | Window Closed / Lapsed |