Patent US2644173A successfully refreshed from Google Patents.
US2644173A
Expired / Lapsed
US
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Impervious sheet with inflatable sides
Assignee: Individual
•
Filing: 1948-03-13
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Granted: 1953-07-07
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Expires: 1968-03-13
Abstract
No abstract record available.
Inventors
- 👤 Wallace O James
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:14
CPC Classifications
A; A47; A47D; A47D15/00; A47D15/005; A47D15/008; A47C; A47C23/00; A47C23/04; A47C23/047; A47C27/00; A47C27/002; A47C27/005; A47C31/00; A47C31/10; A47C31/105; Y; Y10; Y10S; Y10S5/00; Y10S5/946
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US429894A
Cited
US1392533A
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US655087A
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US1061259A
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US1261314A
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US1329687A
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GB159299A
Cited
US1570470A
Cited
US1576211A
Cited
US2327794A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-07-06 | 1957-01-05 | 1957-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-06 | 1961-01-05 | 1961-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-06 | 1965-01-05 | 1965-07-07 | $7700.00 | Window Closed / Lapsed |