US2847685A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mattress supporting construction
Assignee: Dayton Rubber Co
•
Filing: 1952-05-03
•
Granted: 1958-08-19
•
Expires: 1972-05-03
Abstract
No abstract record available.
Inventors
- 👤 Freedlander Abraham Lincoln
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:24
CPC Classifications
A; A47; A47C; A47C27/00; A47C27/14; A47C27/15
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US920256A
Cited
US1000781A
Cited
US2135057A
Cited
GB507215A
Cited
US2551976A
Cited
US2490867A
Cited
US2616100A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-08-18 | 1962-02-17 | 1962-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-18 | 1966-02-17 | 1966-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-18 | 1970-02-17 | 1970-08-19 | $7700.00 | Window Closed / Lapsed |