US2932832A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spring assembly and edge stiffener component therefor
Assignee: Spring Products Developing Co
•
Filing: 1958-06-10
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Granted: 1960-04-19
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Expires: 1978-06-10
Abstract
No abstract record available.
Inventors
- 👤 David I Levine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 09:08
CPC Classifications
A; A47; A47C; A47C27/00; A47C27/04; A47C27/06; A47C27/066
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-04-19 | 1963-10-19 | 1964-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-19 | 1967-10-19 | 1968-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-19 | 1971-10-19 | 1972-04-19 | $7700.00 | Window Closed / Lapsed |