US2978781A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mold expansion and contraction compensating device
Assignee: Owens Corning
•
Filing: 1957-10-28
•
Granted: 1961-04-11
•
Expires: 1977-10-28
Abstract
No abstract record available.
Inventors
- 👤 Everett C Shuman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 00:51
CPC Classifications
B; B28; B28B; B28B7/00; B28B7/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1387066A
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US1634047A
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US1989957A
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US2235906A
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US2247376A
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US2648167A
Cited
US2614309A
Cited
US2745139A
Cited
GB771236A
Cited
US2864127A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-04-10 | 1964-10-10 | 1965-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-10 | 1968-10-10 | 1969-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-10 | 1972-10-10 | 1973-04-11 | $7700.00 | Window Closed / Lapsed |