Patent US3001330A successfully refreshed from Google Patents.
US3001330A
Expired / Lapsed
US
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Corner guard assembly
Assignee: Wilkinson Chutes Inc
•
Filing: 1958-04-23
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Granted: 1961-09-26
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Expires: 1978-04-23
Abstract
No abstract record available.
Inventors
- 👤 Edwin J Czaplicke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:30
CPC Classifications
E; E04; E04F; E04F13/00; E04F13/02; E04F13/04; E04F13/06; E04F2013/063
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1266546A
Cited
US1361586A
Cited
US1674418A
Cited
US1688134A
Cited
US1825914A
Cited
AT149791B
Cited
US2846868A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-09-25 | 1965-03-27 | 1965-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-09-25 | 1969-03-27 | 1969-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-09-25 | 1973-03-27 | 1973-09-26 | $7700.00 | Window Closed / Lapsed |