Patent US2975475A successfully refreshed from Google Patents.
US2975475A
Expired / Lapsed
US
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Sheeting die
Assignee: National Rubber Machinery Co
•
Filing: 1956-07-20
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Granted: 1961-03-21
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Expires: 1976-07-20
Abstract
No abstract record available.
Inventors
- 👤 Eugene E Heston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:57
CPC Classifications
B; B29; B29C; B29C48/00; B29C48/25; B29C48/30; B29C48/305; B29C48/31; B29C48/03; B29C48/07; B29C48/08; B29C48/255; B29C48/2556
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2734224A
Cited
US1717620A
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US2405039A
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US2514211A
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US2479804A
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US2688154A
Cited
GB706323A
Cited
US2813301A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-03-20 | 1964-09-19 | 1965-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-03-20 | 1968-09-19 | 1969-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-03-20 | 1972-09-19 | 1973-03-21 | $7700.00 | Window Closed / Lapsed |