Patent US2642939A successfully refreshed from Google Patents.
US2642939A
Expired / Lapsed
US
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Paper tearing mechanism
Assignee: CLARY MULTIPLIER Corp
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Filing: 1950-06-12
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Granted: 1953-06-23
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Expires: 1970-06-12
Abstract
No abstract record available.
Inventors
- 👤 Kenneth F Oldenburg
- 👤 Fred N Schwend
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 03:31
CPC Classifications
B; B41; B41J; B41J35/00; B41J35/22; Y; Y10; Y10T; Y10T225/00; Y10T225/20; Y10T225/203; Y10T225/232; Y10T225/236; Y10T225/237; Y10T225/238; Y10T225/255; Y10T225/298
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) | 1956-06-22 | 1956-12-22 | 1957-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-22 | 1960-12-22 | 1961-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-22 | 1964-12-22 | 1965-06-23 | $7700.00 | Window Closed / Lapsed |