US2950486A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Support for spring end
Assignee: American Metal Products Co
•
Filing: 1957-07-15
•
Granted: 1960-08-30
•
Expires: 1977-07-15
Abstract
No abstract record available.
Inventors
- 👤 Jr Russell G Heyl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:50
CPC Classifications
A; A47; A47C; A47C23/00; A47C23/04; A47C23/05
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1748666A
Cited
US1963670A
Cited
US1971765A
Cited
US2052040A
Cited
US2078396A
Cited
US2440001A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-30 | 1964-02-29 | 1964-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-30 | 1968-02-29 | 1968-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-30 | 1972-02-29 | 1972-08-30 | $7700.00 | Window Closed / Lapsed |