Patent US2698557A successfully refreshed from Google Patents.
US2698557A
Expired / Lapsed
US
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Pulp forming mold
Assignee: Keyes Fibre Corp
•
Filing: 1951-06-27
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Granted: 1955-01-04
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Expires: 1971-06-27
Abstract
No abstract record available.
Inventors
- 👤 Fred C Harper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 01:26
CPC Classifications
F; F16; F16B; F16B21/00; F16B21/06; F16B21/08; F16B21/086; D; D21; D21J; D21J7/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US889064A
Cited
US1161125A
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US1169693A
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US1978935A
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US2118800A
Cited
US2192937A
Cited
US2359201A
Cited
US2601815A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-01-03 | 1958-07-05 | 1959-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-01-03 | 1962-07-05 | 1963-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-01-03 | 1966-07-05 | 1967-01-04 | $7700.00 | Window Closed / Lapsed |