Patent US2992697A successfully refreshed from Google Patents.
US2992697A
Expired / Lapsed
US
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Boat ladder
Assignee: Columbus Auto Parts Co
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Filing: 1958-07-25
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Granted: 1961-07-18
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Expires: 1978-07-25
Abstract
No abstract record available.
Inventors
- 👤 John W Klages
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:39
CPC Classifications
E; E06; E06C; E06C1/00; E06C1/02; E06C1/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US159627A
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US532983A
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DE356579C
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US1575689A
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US1649206A
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US2265735A
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US2580045A
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US2528317A
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US2758770A
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US2843393A
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US2896831A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-17 | 1965-01-16 | 1965-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-17 | 1969-01-16 | 1969-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-17 | 1973-01-16 | 1973-07-18 | $7700.00 | Window Closed / Lapsed |