Patent US4443488A successfully refreshed from Google Patents.
Patent US2560537A successfully refreshed from Google Patents.
US2560537A
Expired / Lapsed
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Defrosting indicator
Assignee: Individual
•
Filing: 1949-07-08
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Granted: 1951-07-17
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Expires: 1969-07-08
Abstract
No abstract record available.
Inventors
- 👤 Ariel A Andersen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:03
CPC Classifications
B; B65; B65D; B65D79/00; B65D79/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
A DEFROSTING INDICATOR COMPRISING A STRIP OF PAPER ENCASED IN A TRANSPARENT TUBE, SAID ENCASED STRIP BEING FOLDED UPON ITSELF WHEREBY TO CRIMP SAID TUBE UPON SAID STRIP THUS TO DIVIDE IT INTO A FIRST PORTION AND A SECOND PORTION AND TO SUBSTANTIALLY PREVENT MOVEMENT OF LIQUIDS FROM ONE PORTION TO ANOTHER EXCEPT BY DIFFUSION THROUGH SAID PAPER, A COVER PROVIDING MEANS FOR ATTACHING SAID STRIP TO A PACKAGE, AN OPENING IN SAID COVER, SAID OPENING GIVING VISIBILITY TO A PART OF SAID FIRST PORTION, A DYESTUFF AND AN ORGANIC SOLVENT BEING DESPOSITED ON SAID SECOND PORTION.
Claim 2
Dependent Claim
97 words
A DEFROSTING INDICATOR COMPRISING A STRIP OF PAPER ENCASED IN A TRANSPARENT TUBE, SAID ENCASED STRIP BEING FOLDED UPON ITSELF WHEREBY TO CRIMP SAID TUBE UPON SAID STRIP THUS TO DIVIDE IT INTO A FIRST PORTION AND A SECOND PORTION AND TO SUBSTANTIALLY PREVENT MOVEMENT OF LIQUIDS FROM ONE PORTION TO ANOTHER EXCEPT BY DIFFUSION THROUGH SAID PAPER, A COVER PROVIDING MEANS FOR ATTACHING SAID STRIP TO A PACKAGE, AN OPENING IN SAID COVER, SAID OPENING GIVING VISIBILITY TO A PART OF SAID FIRST PORTION, A DYESTUFF AND AN ORGANIC SOLVENT BEING DESPOSITED ON SAID SECOND PORTION.
References Cited (Backward Citations)
US2379459A
Cited
US2460215A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-07-16 | 1955-01-15 | 1955-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-16 | 1959-01-15 | 1959-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-16 | 1963-01-15 | 1963-07-17 | $7700.00 | Window Closed / Lapsed |