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US3251531A Expired / Lapsed US ⏱️ 0.0 years remaining

Egg carton

Assignee: Michigan Carton Co
•
Filing: 1962-02-07
•
Granted: 1966-05-17
•
Expires: 1982-02-07
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Abstract

No abstract record available.

Inventors

  • 👤 Charles E Hook
  • 👤 James A Mccormic

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-30 14:23
CPC Classifications
B; B65; B65D; B65D85/00; B65D85/30; B65D85/32; B65D85/327; B65D85/325

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 214 words
AN EGG CARTON OF THE MACHINE SET-UP TYPE HAVING SPACED WALL MEMBERS, BOTTOM MEMBERS, AN INVERTED VSHAPED RIDGE OPEN FROM THE BOTTOM TO THE TOP THEREOF AND FORMING A LONGITUDINAL PARTITION CONNECTING TOGETHER SAID BOTTOM MEMBERS WITH THE BOTTOM OF SAID CARTON BEING ELEVATED IN ITS CENTRAL PORTION AND NARROWER THAN THE TOP OF SAID CARTON, TRANSVERSE PARTITIONS HALF OF WHICH ARE DEEP AND REACH TO THE BOTTOM OF SAID CARTON WHILE HALF ARE SHALLOW WITH UNBROKEN BOTTOMS WITH A PERFORATION THROUGH SAME ADJACENT BUT SPACED FROM SAID BOTTOM, SAID TRANSVERSE PARTITIONS COOPERATING WITH SAID LONGITUDINAL PARTITION TO SEPARATE THE INTERIOR OF THE EGG CARTON INTO A MULTIPLICITY OF INDIVIDUAL EGG RECEIVING POCKETS, SAID INVERTED V-SHAPED RIDGE BEING CROSS SLIT TO RECEIVE SAID TRANSVERSE PARTITIONS WITH SAID SLITS WHICH RECEIVE AT LEAST THE BOTTOM PORTION OF SAID SHALLOW TRANSVERSE PARTITIONS HAVING HOOKS FOR ENGAGING SAID PERFORATION TO ANCHOR AND HOLD SAID HOLLOW PARTITIONS IN SET-UP POSITION, AND A COVER MEMBER NORMALLY CLOSING SAID EGG CARTON, SAID LONGITUDINAL PARTITION HAVING LONGITUDINALLY ALIGNED PORTIONS EXTENDING ABOVE SAID RIDGE, WITH ONE ADJACENT EACH CROSS PARTITION AT THE END OF EACH PAIR OF OPPOSITE INDIVIDUAL EGG RECEIVING POCKETS AND ENGAGING THE CENTRAL UNDER PORTION OF SAID COVER MEMBER AND FORMING TWO SPACED APART ROWS OF LONGITUDINAL SUPPORTS THEREFOR.
Claim 2
Dependent Claim 214 words
AN EGG CARTON OF THE MACHINE SET-UP TYPE HAVING SPACED WALL MEMBERS, BOTTOM MEMBERS, AN INVERTED VSHAPED RIDGE OPEN FROM THE BOTTOM TO THE TOP THEREOF AND FORMING A LONGITUDINAL PARTITION CONNECTING TOGETHER SAID BOTTOM MEMBERS WITH THE BOTTOM OF SAID CARTON BEING ELEVATED IN ITS CENTRAL PORTION AND NARROWER THAN THE TOP OF SAID CARTON, TRANSVERSE PARTITIONS HALF OF WHICH ARE DEEP AND REACH TO THE BOTTOM OF SAID CARTON WHILE HALF ARE SHALLOW WITH UNBROKEN BOTTOMS WITH A PERFORATION THROUGH SAME ADJACENT BUT SPACED FROM SAID BOTTOM, SAID TRANSVERSE PARTITIONS COOPERATING WITH SAID LONGITUDINAL PARTITION TO SEPARATE THE INTERIOR OF THE EGG CARTON INTO A MULTIPLICITY OF INDIVIDUAL EGG RECEIVING POCKETS, SAID INVERTED V-SHAPED RIDGE BEING CROSS SLIT TO RECEIVE SAID TRANSVERSE PARTITIONS WITH SAID SLITS WHICH RECEIVE AT LEAST THE BOTTOM PORTION OF SAID SHALLOW TRANSVERSE PARTITIONS HAVING HOOKS FOR ENGAGING SAID PERFORATION TO ANCHOR AND HOLD SAID HOLLOW PARTITIONS IN SET-UP POSITION, AND A COVER MEMBER NORMALLY CLOSING SAID EGG CARTON, SAID LONGITUDINAL PARTITION HAVING LONGITUDINALLY ALIGNED PORTIONS EXTENDING ABOVE SAID RIDGE, WITH ONE ADJACENT EACH CROSS PARTITION AT THE END OF EACH PAIR OF OPPOSITE INDIVIDUAL EGG RECEIVING POCKETS AND ENGAGING THE CENTRAL UNDER PORTION OF SAID COVER MEMBER AND FORMING TWO SPACED APART ROWS OF LONGITUDINAL SUPPORTS THEREFOR.

References Cited (Backward Citations)

USRE19625E Cited
US1962296A Cited
US1922145A Cited
US2664233A Cited
US2718347A Cited
US2974849A Cited
US3034696A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1969-05-16 1969-11-15 1970-05-17 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1973-05-16 1973-11-15 1974-05-17 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1977-05-16 1977-11-15 1978-05-17 $7700.00 Window Closed / Lapsed

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