Patent US1827015A successfully refreshed from Google Patents.
US1827015A
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US
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Expanding pile core
Assignee: WESTERN FOUNDATION Co
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Filing: 1928-11-03
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Granted: 1931-10-13
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Expires: 1948-11-03
Abstract
No abstract record available.
Inventors
- 👤 Forrest L Jenkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:37
CPC Classifications
E; E02; E02D; E02D7/00; E02D7/28; E02D7/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1934-10-12 | 1935-04-13 | 1935-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1938-10-12 | 1939-04-13 | 1939-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1942-10-12 | 1943-04-13 | 1943-10-13 | $7700.00 | Window Closed / Lapsed |