US2722970A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Extension for a tubular chair leg
Assignee: WILLIAM C UPHOFF
•
Filing: 1952-01-02
•
Granted: 1955-11-08
•
Expires: 1972-01-02
Abstract
No abstract record available.
Inventors
- 👤 Herman H Stechmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:45
CPC Classifications
A; A47; A47C; A47C3/00; A47C3/20; A47C3/26; A47B; A47B91/00; A47B91/02; Y; Y10; Y10S; Y10S16/00; Y10S16/39; Y10T; Y10T403/00; Y10T403/32; Y10T403/32254; Y10T403/32426; Y10T403/32442; Y10T403/32451
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US241728A
Cited
US1520589A
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DE570620C
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FR367559A
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US942490A
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US1039759A
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US2329601A
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US2378852A
Cited
US2546871A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-11-07 | 1959-05-09 | 1959-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-11-07 | 1963-05-09 | 1963-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-11-07 | 1967-05-09 | 1967-11-08 | $7700.00 | Window Closed / Lapsed |