US2602487A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spring seat and back
Assignee: Individual
•
Filing: 1946-07-06
•
Granted: 1952-07-08
•
Expires: 1966-07-06
Abstract
No abstract record available.
Inventors
- 👤 Hyland C Flint
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:32
CPC Classifications
B; B60; B60N; B60N2/00; B60N2/70; B60N2/7023; B60N2/7035; B60N2/7047; B60N2/7058
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2123888A
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US1263703A
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US1441534A
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US1562658A
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US1522621A
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US1722543A
Cited
US1928939A
Cited
US2063780A
Cited
GB421617A
Cited
US2241551A
Cited
US2142358A
Cited
US2235878A
Cited
US2324152A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-07-08 | 1956-01-07 | 1956-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-07-08 | 1960-01-07 | 1960-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-07-08 | 1964-01-07 | 1964-07-08 | $7700.00 | Window Closed / Lapsed |