Patent US3144134A successfully refreshed from Google Patents.
US3144134A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Letter tray
Assignee: Waldorf Paper Products Co
•
Filing: 1962-12-26
•
Granted: 1964-08-11
•
Expires: 1982-12-26
Abstract
No abstract record available.
Inventors
- 👤 Fred W Frommgen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:06
CPC Classifications
B; B65; B65D; B65D5/00; B65D5/32; B42; B42F; B42F7/00; B42F7/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
171 words
A LETTER TRAY INCLUDING, A WALL PORTION INCLUDING A BACK PANEL, A PAIR OF SIDE PANELS HINGED TO OPPOSITE EDGES OF SAID BACK PANEL, AND TWO PAIRS OF VERTICALLY SPACED FRONT FLAPS FOLDED INTO A COMMON PLANE FROM THE FORWARD EDGES OF SAID SIDE PANELS, A BOTTOM PLATFORM INCLUDING A BOTTOM PANEL OF PROPER WIDTH EXTENDED BETWEEN SAID SIDE PANELS, AND PLATFORM FLAPS FOLDABLY CONNECTED TO THE FORWARD EDGE OF SAID BOTTOM PANEL FOLDED OUTWARDLY OF THE LOWER PAIR OF SAID FRONT FLAPS AND INCLUDING EXTENSIONS FOLDABLY CONNECTED TO SAID PLATFORM FLAPS AND LYING INWARDLY OF SAID FRONT FLAPS, MEANS SECURING THE REAR OF SAID PLATFORM TO SAID BACK PANEL, AN UPPER PLATFORM INCLUDING A BOTTOM PANEL OF A WIDTH FITTING BETWEEN SAID SIDE PANELS AND INCLUDING TOP PLATFORM FLAPS HINGED TO THE FORWARD EDGE THEREOF FOLDED UPWARDLY OUTWARDLY OF THE UPPER PAIR OF FRONT FLAPS, AND FLAP EXTENSIONS FOLDED OVER AND INWARDLY OF THESE FRONT FLAPS, AND MEANS SECURING THE REAR EDGE OF SAID TOP PLATFORM TO SAID BACK PANEL.
Claim 2
Dependent Claim
171 words
A LETTER TRAY INCLUDING, A WALL PORTION INCLUDING A BACK PANEL, A PAIR OF SIDE PANELS HINGED TO OPPOSITE EDGES OF SAID BACK PANEL, AND TWO PAIRS OF VERTICALLY SPACED FRONT FLAPS FOLDED INTO A COMMON PLANE FROM THE FORWARD EDGES OF SAID SIDE PANELS, A BOTTOM PLATFORM INCLUDING A BOTTOM PANEL OF PROPER WIDTH EXTENDED BETWEEN SAID SIDE PANELS, AND PLATFORM FLAPS FOLDABLY CONNECTED TO THE FORWARD EDGE OF SAID BOTTOM PANEL FOLDED OUTWARDLY OF THE LOWER PAIR OF SAID FRONT FLAPS AND INCLUDING EXTENSIONS FOLDABLY CONNECTED TO SAID PLATFORM FLAPS AND LYING INWARDLY OF SAID FRONT FLAPS, MEANS SECURING THE REAR OF SAID PLATFORM TO SAID BACK PANEL, AN UPPER PLATFORM INCLUDING A BOTTOM PANEL OF A WIDTH FITTING BETWEEN SAID SIDE PANELS AND INCLUDING TOP PLATFORM FLAPS HINGED TO THE FORWARD EDGE THEREOF FOLDED UPWARDLY OUTWARDLY OF THE UPPER PAIR OF FRONT FLAPS, AND FLAP EXTENSIONS FOLDED OVER AND INWARDLY OF THESE FRONT FLAPS, AND MEANS SECURING THE REAR EDGE OF SAID TOP PLATFORM TO SAID BACK 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) | 1967-08-11 | 1968-02-10 | 1968-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-11 | 1972-02-10 | 1972-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-11 | 1976-02-10 | 1976-08-11 | $7700.00 | Window Closed / Lapsed |