US3115253A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nested ladder
Assignee: Individual
•
Filing: 1961-09-19
•
Granted: 1963-12-24
•
Expires: 1981-09-19
Abstract
No abstract record available.
Inventors
- 👤 Malbin Isaac
- 👤 Maddalena Anthony
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:16
CPC Classifications
E; E06; E06C; E06C1/00; E06C1/02; E06C1/38; A; A63; A63B; A63B9/00; A63B2210/00; A63B2210/50
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US197721A
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US1848476A
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US650700A
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US816077A
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US1220447A
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US1234628A
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US1951754A
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US1917564A
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US2349385A
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GB649967A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-12-23 | 1967-06-24 | 1967-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-23 | 1971-06-24 | 1971-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-23 | 1975-06-24 | 1975-12-24 | $7700.00 | Window Closed / Lapsed |