US3043399A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flexible ladder
Assignee: ALEXANDER C KIDD
•
Filing: 1961-04-07
•
Granted: 1962-07-10
•
Expires: 1981-04-07
Abstract
No abstract record available.
Inventors
- 👤 Earl A Marryatt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 07:56
CPC Classifications
E; E06; E06C; E06C1/00; E06C1/52; E06C1/525; B; B63; B63B; B63B27/00; B63B27/14; E06C1/56; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49893
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US192403A
Cited
US266062A
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US376034A
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US836432A
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US2171863A
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US2370728A
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US2385824A
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US2885132A
Cited
US2985254A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-07-09 | 1966-01-08 | 1966-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-09 | 1970-01-08 | 1970-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-09 | 1974-01-08 | 1974-07-10 | $7700.00 | Window Closed / Lapsed |