US2874389A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Innerspring foam mattress
Assignee: Englander Co Inc
•
Filing: 1956-04-10
•
Granted: 1959-02-24
•
Expires: 1976-04-10
Abstract
No abstract record available.
Inventors
- 👤 Koenigsberg Max
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:11
CPC Classifications
A; A47; A47C; A47C27/00; A47C27/14; A47C27/16; A47C27/20; B; B29; B29C; B29C44/00; B29C44/02; B29C44/12; B29C44/1271; Y; Y10; Y10S; Y10S297/00; Y10S297/01
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2576045A
Cited
DE807009C
Cited
US2626408A
Cited
US2785440A
Cited
FR1051897A
Cited
US2785739A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-02-23 | 1962-08-25 | 1963-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-23 | 1966-08-25 | 1967-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-23 | 1970-08-25 | 1971-02-24 | $7700.00 | Window Closed / Lapsed |