US2978780A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mold
Assignee: Individual
•
Filing: 1958-04-07
•
Granted: 1961-04-11
•
Expires: 1978-04-07
Abstract
No abstract record available.
Inventors
- 👤 Clarkson Stanley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:36
CPC Classifications
B; B28; B28B; B28B7/00; B28B7/16; B28B7/168
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US692919A
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US1585455A
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US1568335A
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US1655023A
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US1702253A
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US1705354A
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US1983758A
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US2101015A
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US2614310A
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 |