Patent US2756808A successfully refreshed from Google Patents.
US2756808A
Expired / Lapsed
US
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Portable head and back rest
Assignee: Individual
•
Filing: 1953-12-15
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Granted: 1956-07-31
•
Expires: 1973-12-15
Abstract
No abstract record available.
Inventors
- 👤 Herman H Eichorst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:58
CPC Classifications
A; A47; A47C; A47C7/00; A47C7/36; A47C7/40; A47C7/42; A47C7/425; B; B60; B60N; B60N2/00; B60N2/80; B60N2/882
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US299361A
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US430731A
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US668765A
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US1837406A
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US2020573A
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US2109881A
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US2634798A
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US2589013A
Cited
US2626654A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-07-31 | 1960-01-30 | 1960-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-31 | 1964-01-30 | 1964-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-31 | 1968-01-30 | 1968-07-31 | $7700.00 | Window Closed / Lapsed |