US2848282A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ladder platform
Assignee: Individual
•
Filing: 1955-11-30
•
Granted: 1958-08-19
•
Expires: 1975-11-30
Abstract
No abstract record available.
Inventors
- 👤 William M Weber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:22
CPC Classifications
E; E06; E06C; E06C7/00; E06C7/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US69049A
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US403636A
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US510194A
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US662566A
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US743899A
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US1028362A
Cited
US1142694A
Cited
US1578388A
Cited
US2448746A
Cited
CH272180A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-08-18 | 1962-02-17 | 1962-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-18 | 1966-02-17 | 1966-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-18 | 1970-02-17 | 1970-08-19 | $7700.00 | Window Closed / Lapsed |