Patent US2740739A successfully refreshed from Google Patents.
US2740739A
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US
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Carpet underlay
Assignee: National Sponge Cushion Co Inc
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Filing: 1952-12-27
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Granted: 1956-04-03
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Expires: 1972-12-27
Abstract
No abstract record available.
Inventors
- 👤 Dixon R Harwin
- 👤 Virgil H Bodle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:17
CPC Classifications
B; B29; B29C; B29C44/00; B29C44/02; B29C44/12; B29C44/1209; B29C44/20; B29C44/32; B29C44/329; B29C44/332; B29L; B29L2031/00; B29L2031/732; B29L2031/7322; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24479; Y10T428/24496; Y10T428/24504; Y10T428/24521; Y10T428/24554
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
64 words
A CARPET UNDERLAY COMPRISING A COARSE-MESH FABRIC AND A SPONGE RUBBER FACING ON ONE SIDE OF SAID FABRIC AND FORMED WITH BULGES THAT ARE SPACED FROM THE FABRIC, SAID FACING BETWEEN THE BULGES, BEING IN CONTACT WITH THE FABRIC AND HAVING A MULTIPLICITY OF PROJECTIONS FORMED AND FORCED BY PRESSURE FROM A BLOWING AGENT AND EXTENDING INTO AND THROUGH THE INTERSTICES OF THE FABRIC.
Claim 2
Dependent Claim
64 words
A CARPET UNDERLAY COMPRISING A COARSE-MESH FABRIC AND A SPONGE RUBBER FACING ON ONE SIDE OF SAID FABRIC AND FORMED WITH BULGES THAT ARE SPACED FROM THE FABRIC, SAID FACING BETWEEN THE BULGES, BEING IN CONTACT WITH THE FABRIC AND HAVING A MULTIPLICITY OF PROJECTIONS FORMED AND FORCED BY PRESSURE FROM A BLOWING AGENT AND EXTENDING INTO AND THROUGH THE INTERSTICES OF THE FABRIC.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-04-03 | 1959-10-03 | 1960-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-04-03 | 1963-10-03 | 1964-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-04-03 | 1967-10-03 | 1968-04-03 | $7700.00 | Window Closed / Lapsed |