US3257768A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Corner lock package
Assignee: WR Grace and Co
•
Filing: 1962-04-17
•
Granted: 1966-06-28
•
Expires: 1982-04-17
Abstract
No abstract record available.
Inventors
- 👤 John W Harrison
- 👤 Wylie C Kirkpatrick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:43
CPC Classifications
B; B65; B65D; B65D75/00; B65D75/002; B65D75/004
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
METHOD FOR SECURELY AND FIRMLY PACKAGING PRODUCT ON A RECTANGULAR RIGID BACKING BOARD AT LEAST SLIGHTLY LARGER THAN THE PRODUCT COMPRISING (A) CUTTING A SMALL OPENING THROUGH THE BACKING BOARD ADJACENT TO BUT SPACED FROM EACH OF THE FOUR CORNERS THEREOF (B) PLACING PRODUCT TO BE PACKAGED ON THE BACKING BOARD WITHIN THE AREA BOUNDED BY THE SAID OPENINGS (C) PLACING OVER THE PRODUCT A RECTANGULAR COVER SHEET OF HEAT SHRINKABLE FILM MATERIAL OF A SIZE AT LEAST SLIGHTLY LARGER THAN THE BACKING BOARD (D) DRAWING A CORNER OF THE FILM SHEET THROUGH EACH
Claim 2
Dependent Claim
94 words
METHOD FOR SECURELY AND FIRMLY PACKAGING PRODUCT ON A RECTANGULAR RIGID BACKING BOARD AT LEAST SLIGHTLY LARGER THAN THE PRODUCT COMPRISING (A) CUTTING A SMALL OPENING THROUGH THE BACKING BOARD ADJACENT TO BUT SPACED FROM EACH OF THE FOUR CORNERS THEREOF (B) PLACING PRODUCT TO BE PACKAGED ON THE BACKING BOARD WITHIN THE AREA BOUNDED BY THE SAID OPENINGS (C) PLACING OVER THE PRODUCT A RECTANGULAR COVER SHEET OF HEAT SHRINKABLE FILM MATERIAL OF A SIZE AT LEAST SLIGHTLY LARGER THAN THE BACKING BOARD (D) DRAWING A CORNER OF THE FILM SHEET THROUGH EACH
References Cited (Backward Citations)
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Cited
US2636460A
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US2836339A
Cited
US3034271A
Cited
US2976655A
Cited
US2992457A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-06-27 | 1969-12-27 | 1970-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-27 | 1973-12-27 | 1974-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-27 | 1977-12-27 | 1978-06-28 | $7700.00 | Window Closed / Lapsed |