Patent US3221428A successfully refreshed from Google Patents.
US3221428A
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Assignee: IRVING MANN
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Filing: 1963-03-19
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Granted: 1965-12-07
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Expires: 1983-03-19
Abstract
No abstract record available.
Inventors
- 👤 Wanda B Fischler
- 👤 Marilyn M Mann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:04
CPC Classifications
B; B42; B42D; B42D25/00; B42D25/30; B42D25/351; B42D25/20; B42D25/22; B42D25/23; B42D25/36; B42D25/378; B42D25/40; B42D25/405; B42D25/415; B42D25/45; B42D25/455; B42D25/465; B42D25/47; Y; Y10; Y10T; Y10T292/00; Y10T292/48
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
52 words
A SEALED DOCUMENT ASSEMBLY ADAPTED TO INDICATE TAMPERING THEREWITH COMPRISING A DOCUMENT WITH VISIBLE INDICIA THEREON; AN ENCASEMENT OF TRANSPARENT SYNTHETIC PLASTIC MATERIAL EXTENDING ABOUT SAID DOCUMENT; AND CHEMICAL REAGENT MEANS WITHIN SAID ENCASEMENT SUBSTANTIALLY INERT TO SAID DOCUMENT DURING SEALED ASSEMBLY AND REACTIVE UPON RUPTURING OF SAID ENCASEMENT OF EVIDENCE TAMPERING.
Claim 2
Dependent Claim
52 words
A SEALED DOCUMENT ASSEMBLY ADAPTED TO INDICATE TAMPERING THEREWITH COMPRISING A DOCUMENT WITH VISIBLE INDICIA THEREON; AN ENCASEMENT OF TRANSPARENT SYNTHETIC PLASTIC MATERIAL EXTENDING ABOUT SAID DOCUMENT; AND CHEMICAL REAGENT MEANS WITHIN SAID ENCASEMENT SUBSTANTIALLY INERT TO SAID DOCUMENT DURING SEALED ASSEMBLY AND REACTIVE UPON RUPTURING OF SAID ENCASEMENT OF EVIDENCE TAMPERING.
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) | 1968-12-06 | 1969-06-07 | 1969-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-06 | 1973-06-07 | 1973-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-06 | 1977-06-07 | 1977-12-07 | $7700.00 | Window Closed / Lapsed |