US2585134A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Deck hatch structure
Assignee: Union Carbide Corp
•
Filing: 1946-07-10
•
Granted: 1952-02-12
•
Expires: 1966-07-10
Abstract
No abstract record available.
Inventors
- 👤 Harry E Kennedy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 15:39
CPC Classifications
B; B63; B63B; B63B19/00; B63B19/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US522744A
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US1311155A
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US926065A
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US1250594A
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US1646666A
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US1756387A
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GB349465A
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GB366951A
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US2179774A
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US2136273A
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US2278318A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-02-11 | 1955-08-13 | 1956-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-02-11 | 1959-08-13 | 1960-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-02-11 | 1963-08-13 | 1964-02-12 | $7700.00 | Window Closed / Lapsed |