US3220637A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Envelope
Assignee: Individual
•
Filing: 1964-08-28
•
Granted: 1965-11-30
•
Expires: 1984-08-28
Abstract
No abstract record available.
Inventors
- 👤 Yee Yam
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:15
CPC Classifications
B; B65; B65D; B65D27/00; B65D27/12; B65D27/20; B65D27/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
196 words
AN ENVELOPE FORMED OF A SINGLE SHEET OF PAPER COMPRISING: A RECTANGULAR FRONT PANEL, A FRONT PANEL EXTENSION ATTACHED ALONG THE LOWER EDGE OF SAID FRONT PANEL, A BACK PANEL SUBSTANTIALLY EQUAL IN DIMENSIONS TO SAID FRONT PANEL AND ATTACHED THERETO ALONG THE UPPER EDGE OF SAID FRONT PANEL, A BACK PANEL EXTENSION GENERALLY IN THE SHAPE OF A TRAPEZOID WHEREIN THE LOWER EDGE THEREOF WHICH IS ATTACHED TO SAID BACK PANEL IS OF A LONGER DIMENSION THAN THE UPPER EDGE THEREOF, A CLOSING TAB GENERALLY IN THE SHAPE OF A TRAPEZOID WHEREIN THE LOWER EDGE THEREOF WHICH IS ATTACHED TO SAID BACK PANEL EXTENSION IS OF A SHORTER DIMENSION THAN THE UPPER EDGE THEREOF, AND WHICH CLOSING TAB IS ADAPTED TO FOLD UNDER SAID FRONT PANEL EXTENSION IN THE CLOSED POSITION, A PAIR OF SIDE FLAPS EACH ONE OF WHICH IS TRIANGULAR IN SHAPE AND ATTACHED AT THE BASE SIDE THEREOF TO EACH END OF SAID BACK PANEL, AND ADAPTED TO FOLD OVER SAID FRONT PANEL, AND A PAIR OF LOCKING TABS, ONE OF WHICH IS ATTACHED TO THE UPPER EDGE OF EACH OF SAID SIDE FLAPS AND ADAPTED TO FOLD UNDER SAID FRONT PANEL.
Claim 2
Dependent Claim
196 words
AN ENVELOPE FORMED OF A SINGLE SHEET OF PAPER COMPRISING: A RECTANGULAR FRONT PANEL, A FRONT PANEL EXTENSION ATTACHED ALONG THE LOWER EDGE OF SAID FRONT PANEL, A BACK PANEL SUBSTANTIALLY EQUAL IN DIMENSIONS TO SAID FRONT PANEL AND ATTACHED THERETO ALONG THE UPPER EDGE OF SAID FRONT PANEL, A BACK PANEL EXTENSION GENERALLY IN THE SHAPE OF A TRAPEZOID WHEREIN THE LOWER EDGE THEREOF WHICH IS ATTACHED TO SAID BACK PANEL IS OF A LONGER DIMENSION THAN THE UPPER EDGE THEREOF, A CLOSING TAB GENERALLY IN THE SHAPE OF A TRAPEZOID WHEREIN THE LOWER EDGE THEREOF WHICH IS ATTACHED TO SAID BACK PANEL EXTENSION IS OF A SHORTER DIMENSION THAN THE UPPER EDGE THEREOF, AND WHICH CLOSING TAB IS ADAPTED TO FOLD UNDER SAID FRONT PANEL EXTENSION IN THE CLOSED POSITION, A PAIR OF SIDE FLAPS EACH ONE OF WHICH IS TRIANGULAR IN SHAPE AND ATTACHED AT THE BASE SIDE THEREOF TO EACH END OF SAID BACK PANEL, AND ADAPTED TO FOLD OVER SAID FRONT PANEL, AND A PAIR OF LOCKING TABS, ONE OF WHICH IS ATTACHED TO THE UPPER EDGE OF EACH OF SAID SIDE FLAPS AND ADAPTED TO FOLD UNDER SAID FRONT PANEL.
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) | 1968-11-29 | 1969-05-31 | 1969-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-29 | 1973-05-31 | 1973-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-29 | 1977-05-31 | 1977-11-30 | $7700.00 | Window Closed / Lapsed |