Patent US2491898A successfully refreshed from Google Patents.
US2491898A
Expired / Lapsed
US
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Chair
Assignee: Individual
•
Filing: 1945-06-11
•
Granted: 1949-12-20
•
Expires: 1965-06-11
Abstract
No abstract record available.
Inventors
- 👤 Frank J Luketa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:35
CPC Classifications
A; A47; A47C; A47C1/00; A47C1/02; A47C1/031; A47C1/036; A47C1/037
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US153478A
Cited
US619272A
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US633087A
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US860222A
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US902092A
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US1262216A
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US1442664A
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US1688576A
Cited
US2133471A
Cited
US2151729A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-12-19 | 1953-06-20 | 1953-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-12-19 | 1957-06-20 | 1957-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-12-19 | 1961-06-20 | 1961-12-20 | $7700.00 | Window Closed / Lapsed |