US2773543A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coupling connection for wire spring structures
Assignee: Universal Wire Spring Co
•
Filing: 1954-02-15
•
Granted: 1956-12-11
•
Expires: 1974-02-15
Abstract
No abstract record available.
Inventors
- 👤 William C Sandor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 02:38
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)
US1859630A
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US2551800A
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US2643705A
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US2673598A
Cited
US2657740A
Cited
US2676647A
Cited
US2669293A
Cited
US2684844A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-12-11 | 1960-06-11 | 1960-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-11 | 1964-06-11 | 1964-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-11 | 1968-06-11 | 1968-12-11 | $7700.00 | Window Closed / Lapsed |