US3005513A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stepladders and structural components thereof
Assignee: White Metal Rolling and Stamping Corp
•
Filing: 1959-03-25
•
Granted: 1961-10-24
•
Expires: 1979-03-25
Abstract
No abstract record available.
Inventors
- 👤 Clayton E Larson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 08:04
CPC Classifications
E; E06; E06C; E06C1/00; E06C1/02; E06C1/14; E06C1/16; E06C1/20; E06C7/00; E06C7/08; E06C7/42; E06C7/46
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US283524A
Cited
US791509A
Cited
US891736A
Cited
US1479262A
Cited
CH132565A
Cited
GB555774A
Cited
US2899008A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-10-23 | 1965-04-24 | 1965-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-10-23 | 1969-04-24 | 1969-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-10-23 | 1973-04-24 | 1973-10-24 | $7700.00 | Window Closed / Lapsed |