Patent US3619902A successfully refreshed from Google Patents.
US3619902A
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US
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Letter opener
Assignee: MEWECCO FLEURY MECHANISCHE WER
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Filing: 1969-03-12
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Granted: 1971-11-16
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Expires: 1989-03-12
Abstract
Abstract LETTER OPENER HAVING A GUIDE GROOVE AND A KNIFE IN A HANDLE WITH A SPRING THEREIN SO THAT THE LATER CAN FORCE THE KNIFE INTO THE GROOVE AGAINST AN ADJUSTABLE STOP TO CONTROL THE EXTENT OF THE KNIFE PROJECTING INTO THE GUIDE GROOVE.
Inventors
- 👤 Josef Viktor Fleury
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 16:14
CPC Classifications
B; B43; B43M; B43M7/00; B43M7/002
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) | 1974-11-15 | 1975-05-17 | 1975-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-15 | 1979-05-17 | 1979-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-15 | 1983-05-17 | 1983-11-16 | $7700.00 | Window Closed / Lapsed |