US3012628A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ladder holder
Assignee: Individual
•
Filing: 1959-08-26
•
Granted: 1961-12-12
•
Expires: 1979-08-26
Abstract
No abstract record available.
Inventors
- 👤 Zumbaum William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:47
CPC Classifications
E; E06; E06C; E06C7/00; E06C7/42; E06C7/423
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR324380A
Cited
US1151809A
Cited
US2008582A
Cited
US2162022A
Cited
US2409622A
Cited
US2313880A
Cited
US2324414A
Cited
US2584505A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-12-11 | 1965-06-12 | 1965-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-12-11 | 1969-06-12 | 1969-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-12-11 | 1973-06-12 | 1973-12-12 | $7700.00 | Window Closed / Lapsed |