US2537071A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chair having spring supported seat and back
Assignee: Individual
•
Filing: 1945-07-30
•
Granted: 1951-01-09
•
Expires: 1965-07-30
Abstract
No abstract record available.
Inventors
- 👤 Charles F Lukins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:29
CPC Classifications
A; A47; A47C; A47C3/00; A47C3/02; A47C3/021; A47C3/025; A47C3/0252; A47C7/00; A47C7/36; A47C7/40; A47C7/44; A47C7/445
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US172040A
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US481582A
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US581762A
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US593068A
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US601573A
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US1074012A
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US1626161A
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FR689756A
Cited
US1962464A
Cited
CH166443A
Cited
GB407221A
Cited
US2084310A
Cited
US2006422A
Cited
US2080607A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-01-08 | 1954-07-10 | 1955-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-01-08 | 1958-07-10 | 1959-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-01-08 | 1962-07-10 | 1963-01-09 | $7700.00 | Window Closed / Lapsed |