Patent US2807033A successfully refreshed from Google Patents.
US2807033A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mattress
Assignee: Individual
•
Filing: 1956-02-06
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Granted: 1957-09-24
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Expires: 1976-02-06
Abstract
No abstract record available.
Inventors
- 👤 Herman P Austen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:21
CPC Classifications
A; A47; A47C; A47C27/00; A47C27/14; A47C27/142; A47C27/146; A47C20/00; A47C20/02; A47C20/026; A47C21/00; A47C21/04; A47C21/042; A47C21/046; A47C27/144; A47C27/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1542674A
Cited
US1548728A
Cited
US2244435A
Cited
US2371788A
Cited
US2570736A
Cited
US2461062A
Cited
DE842385C
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-23 | 1961-03-25 | 1961-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-23 | 1965-03-25 | 1965-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-23 | 1969-03-25 | 1969-09-24 | $7700.00 | Window Closed / Lapsed |