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Patent US2797442A successfully refreshed from Google Patents.
US2797442A
Expired / Lapsed
US
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Foam rubber mold construction
Assignee: Dayton Rubber Co
•
Filing: 1953-04-02
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Granted: 1957-07-02
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Expires: 1973-04-02
Abstract
No abstract record available.
Inventors
- 👤 William T Wagner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:54
CPC Classifications
B; B29; B29C; B29C44/00; B29C44/34; B29C44/58; B29C44/583; B29C33/00; B29C33/0033; B29C33/02; B29C33/30; B29C33/301; Y; Y10; Y10S; Y10S425/00; Y10S425/11
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1229873A
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US1760283A
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US2000430A
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US2145731A
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US2250196A
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US2351529A
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US2349143A
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US2661498A
Cited
GB672468A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-01 | 1960-12-31 | 1961-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-01 | 1964-12-31 | 1965-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-01 | 1968-12-31 | 1969-07-02 | $7700.00 | Window Closed / Lapsed |