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US2670768A
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Work-engaging cutter guide for splitting machines
Assignee: Armstrong World Industries Inc
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Filing: 1949-10-26
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Granted: 1954-03-02
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Expires: 1969-10-26
Abstract
No abstract record available.
Inventors
- 👤 Henry M Yohn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:17
CPC Classifications
B; B27; B27J; B27J5/00; B27L; B27L5/00; B27L5/06; Y; Y10; Y10T; Y10T83/00; Y10T83/02; Y10T83/0267; Y10T83/202; Y10T83/2074; Y10T83/2077; Y10T83/707; Y10T83/7264; Y10T83/869; Y10T83/8878; Y10T83/8886; Y10T83/8887
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-03-01 | 1957-08-31 | 1958-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-01 | 1961-08-31 | 1962-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-01 | 1965-08-31 | 1966-03-02 | $7700.00 | Window Closed / Lapsed |