Patent US3229894A successfully refreshed from Google Patents.
US3229894A
Expired / Lapsed
US
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Envelope
Assignee: Individual
•
Filing: 1963-08-07
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Granted: 1966-01-18
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Expires: 1983-08-07
Abstract
No abstract record available.
Inventors
- 👤 Rosenthal Sol Roy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 02:20
CPC Classifications
B; B65; B65D; B65D27/00; B65D27/32; B65D27/34; B31; B31B; B31B2150/00; B31B2160/00; B31B2160/10; B31B2170/00; B31B50/00; B31B50/25
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
94 words
AN IMPROVED ENVELOPE COMPRISING A FRONT PANEL, A PLURALITY OF REAR PANELS ATTACHED TO SAID FRONT PANEL, AND A PAIR OF SPACED CONTINUOUS MECHANICALLY SCARIFIED LINES PROVIDED IN AT LEAST ONE OF SAID PANELS WHICH LINES DEFINE AN OPENING STRIP, SAID LINES INTERSECTING AT LEAST TWO EDGES OF THE ENVELOPE IN FOLDED FORM, SAID MECHANICAL SCARIFICATION DECREASING THE TEAR STRENGTH OF SAID PANEL MATERIAL ABOUT 70 TO ABOUT 80% SO THAT SAID OPENING STRIP CAN BE EASILY TORN FROM THE ENVELOPE IN ORDER TO OPEN IT BUT WILL RESIST INADVERTENT TEARING DURING NORMAL HANDLING.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-17 | 1969-07-19 | 1970-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-17 | 1973-07-19 | 1974-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-17 | 1977-07-19 | 1978-01-18 | $7700.00 | Window Closed / Lapsed |