US2934163A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ladder attachment
Assignee: Individual
•
Filing: 1957-10-23
•
Granted: 1960-04-26
•
Expires: 1977-10-23
Abstract
No abstract record available.
Inventors
- 👤 Casimer S Ladewski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:31
CPC Classifications
E; E06; E06C; E06C7/00; E06C7/48
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE141308C
Cited
US543513A
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US708413A
Cited
US799782A
Cited
US1004284A
Cited
US1864269A
Cited
US2680554A
Cited
US2815160A
Cited
US2803388A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-04-26 | 1963-10-26 | 1964-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-26 | 1967-10-26 | 1968-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-26 | 1971-10-26 | 1972-04-26 | $7700.00 | Window Closed / Lapsed |