Patent US2613732A successfully refreshed from Google Patents.
US2613732A
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US
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Seat spring
Assignee: Stubnitz Greene Spring Corp
•
Filing: 1948-03-26
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Granted: 1952-10-14
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Expires: 1968-03-26
Abstract
No abstract record available.
Inventors
- 👤 Kenneth R Dye
- 👤 Stubnitz Maurice
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 17:57
CPC Classifications
B; B60; B60N; B60N2/00; B60N2/70; B60N2/7023; B60N2/7035; B60N2/7047; B60N2/7058; B60N2/7064
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1164534A
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US1457658A
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US1544872A
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US1544873A
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US1958481A
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US1918618A
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US1940853A
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US1977051A
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US1940637A
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US2022959A
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US2237585A
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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) | 1955-10-14 | 1956-04-14 | 1956-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-10-14 | 1960-04-14 | 1960-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-10-14 | 1964-04-14 | 1964-10-14 | $7700.00 | Window Closed / Lapsed |