Patent US2722267A successfully refreshed from Google Patents.
US2722267A
Expired / Lapsed
US
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Seat spring construction
Assignee: Individual
•
Filing: 1953-11-10
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Granted: 1955-11-01
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Expires: 1973-11-10
Abstract
No abstract record available.
Inventors
- 👤 Curtis P Liljengren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:00
CPC Classifications
B; B64; B64D; B64D11/00; B64D11/06; A; A47; A47C; A47C1/00; A47C1/02; A47C1/022; A47C1/024; A47C1/12; A47C4/00; A47C4/04; A47C4/18; A47C7/00; A47C7/02; A47C7/28; A47C7/285; A47C7/287; A47C7/54; A47C9/00; A47C9/06; B60; B60N; B60N2/00; B60N2/24; B60N2/242; B60N2/30; B60N2/3002; B60N2/3004; B60N2/3009; B60N2/3011; B60N2/3038; B60N2/304; B60N2/3043; B60N2/70; B60N2/7023; B60N2/7035; B60N2/7041; B60N2/7047; B60N2/7058; B61; B61D; B61D33/00; B64D11/0639; B64D11/064; B64D11/0647; Y; Y02; Y02T; Y02T50/00; Y02T50/40
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1513726A
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US1879724A
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US2281341A
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US2202301A
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US2239057A
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US2264006A
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US2302479A
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GB550624A
Cited
US2572482A
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US2656877A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-10-31 | 1959-05-02 | 1959-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-10-31 | 1963-05-02 | 1963-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-10-31 | 1967-05-02 | 1967-11-01 | $7700.00 | Window Closed / Lapsed |