Patent US2678081A successfully refreshed from Google Patents.
US2678081A
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US
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Apparatus for making carpet underlay material
Assignee: ALEXANDER SMITH Inc
•
Filing: 1951-08-24
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Granted: 1954-05-11
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Expires: 1971-08-24
Abstract
No abstract record available.
Inventors
- 👤 Leo W Rainard
- 👤 Thomas F Jacoby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:58
CPC Classifications
B; B29; B29B; B29B17/00; B29B17/0026; B29B17/0042; B29K; B29K2021/00; Y; Y02; Y02W; Y02W30/00; Y02W30/50; Y02W30/62
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1597808A
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US1963339A
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GB438868A
Cited
US2088407A
Cited
GB437399A
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US2147362A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-05-10 | 1957-11-09 | 1958-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-10 | 1961-11-09 | 1962-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-10 | 1965-11-09 | 1966-05-11 | $7700.00 | Window Closed / Lapsed |