US3616487A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Box hinge
Assignee: Eli Lilly and Co
•
Filing: 1969-03-10
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Granted: 1971-11-02
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Expires: 1989-03-10
Abstract
Abstract A HINGE DESIGN FORMED PLASTIC SHEET MATERIAL SUSCEPTIBLE TO FORMATION BY HEAT AND PRESSURE WHEREBY TWO FLUSH SURFACES MAY BE INTEGRALLY HINGED. THE HINGE IS FORMES BY CONFORMING PLASTIC SHEET MATERIAL INTO THREE LONGITUDINAL VALLEYS IN A MOLD WHICH ARE SEPARATED BY A PAIR OF LONGITUDINAL RIDGES.
Inventors
- 👤 Timothy E Dearth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:32
CPC Classifications
E; E05; E05D; E05D1/00; E05D1/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-11-01 | 1975-05-03 | 1975-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-01 | 1979-05-03 | 1979-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-01 | 1983-05-03 | 1983-11-02 | $7700.00 | Window Closed / Lapsed |