Patent US2706000A successfully refreshed from Google Patents.
US2706000A
Expired / Lapsed
US
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Slitting knife arrangement
Assignee: Armstrong World Industries Inc
•
Filing: 1951-06-29
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Granted: 1955-04-12
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Expires: 1971-06-29
Abstract
No abstract record available.
Inventors
- 👤 Harry H Landis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:40
CPC Classifications
D; D06; D06N; D06N3/00; D06N3/0086; Y; Y10; Y10T; Y10T83/00; Y10T83/768; Y10T83/7751; Y10T83/7809; Y10T83/7847; Y10T83/7851; Y10T83/7855
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US366104A
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US516317A
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US1053359A
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US1965738A
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US2084573A
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US2323003A
Cited
US2239454A
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US2360653A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-04-11 | 1958-10-11 | 1959-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-04-11 | 1962-10-11 | 1963-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-04-11 | 1966-10-11 | 1967-04-12 | $7700.00 | Window Closed / Lapsed |