US2454912A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Springy adjustable seating structure
Assignee: Mishawaka Rubber and Woollen Manufacturing Co
•
Filing: 1944-10-30
•
Granted: 1948-11-30
•
Expires: 1964-10-30
Abstract
No abstract record available.
Inventors
- 👤 Cunningham Marion Morgan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:05
CPC Classifications
A; A47; A47C; A47C5/00; A47C5/04; A47C5/06; A47C7/00; A47C7/56
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2303308A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-11-30 | 1952-05-31 | 1952-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-11-30 | 1956-05-31 | 1956-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-11-30 | 1960-05-31 | 1960-11-30 | $7700.00 | Window Closed / Lapsed |