US2903086A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ladder attachment
Assignee: Individual
•
Filing: 1958-02-10
•
Granted: 1959-09-08
•
Expires: 1978-02-10
Abstract
No abstract record available.
Inventors
- 👤 Howard L Chubbs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:41
CPC Classifications
E; E06; E06C; E06C7/00; E06C7/48; E06C7/484
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1471848A
Cited
US1543551A
Cited
GB268709A
Cited
US2327317A
Cited
US2473951A
Cited
US2710129A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-09-07 | 1963-03-09 | 1963-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-07 | 1967-03-09 | 1967-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-07 | 1971-03-09 | 1971-09-08 | $7700.00 | Window Closed / Lapsed |