US2575666A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reinforced web and method and apparatus for forming same
Assignee: SILVERCOTE PRODUCTS Inc
•
Filing: 1948-09-09
•
Granted: 1951-11-20
•
Expires: 1968-09-09
Abstract
No abstract record available.
Inventors
- 👤 Warren A Knudson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:47
CPC Classifications
B; B29; B29C; B29C70/00; B29C70/04; B29C70/06; B29C70/10; B29C70/16; B32; B32B; B32B27/00; B29C70/68; B29C70/685; B29C70/687; B29K; B29K2105/00; B29K2105/06; B29K2105/08; B29K2105/10; B29K2105/101; B29K2105/108; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24058; Y10T428/24074; Y10T428/24091
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1292890A
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US1338164A
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US1494970A
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US1460949A
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US1923710A
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US1923837A
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US1942354A
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US1894219A
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US2076343A
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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) | 1954-11-19 | 1955-05-21 | 1955-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-11-19 | 1959-05-21 | 1959-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-11-19 | 1963-05-21 | 1963-11-20 | $7700.00 | Window Closed / Lapsed |