Patent US2611138A successfully refreshed from Google Patents.
US2611138A
Expired / Lapsed
US
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Mattress and upholstery spring structure
Assignee: Englander Co Inc
•
Filing: 1950-02-03
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Granted: 1952-09-23
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Expires: 1970-02-03
Abstract
No abstract record available.
Inventors
- 👤 Piliero James
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 04:28
CPC Classifications
A; A47; A47C; A47C23/00; A47C23/04; A47C23/043; A47C23/0438; A47C23/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US103030A
Cited
US754260A
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US771191A
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US1120887A
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US1329145A
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US1888357A
Cited
US2242731A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-09-23 | 1956-03-24 | 1956-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-23 | 1960-03-24 | 1960-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-23 | 1964-03-24 | 1964-09-23 | $7700.00 | Window Closed / Lapsed |