US2535448A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Counterbalanced hinge structure
Assignee: METAL PRODUCTS Inc
•
Filing: 1948-04-02
•
Granted: 1950-12-26
•
Expires: 1968-04-02
Abstract
No abstract record available.
Inventors
- 👤 Richard A Nowell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:41
CPC Classifications
A; A47; A47C; A47C17/00; A47C17/04; A47C17/16; A47C17/20; A47C17/207; A47C17/2076
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1285664A
Cited
US1266691A
Cited
US1401355A
Cited
US1997577A
Cited
FR769785A
Cited
US2187713A
Cited
US2334493A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-12-25 | 1954-06-26 | 1954-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-12-25 | 1958-06-26 | 1958-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-12-25 | 1962-06-26 | 1962-12-26 | $7700.00 | Window Closed / Lapsed |