Patent US3186628A successfully refreshed from Google Patents.
US3186628A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Packaging
Assignee: TOWER PACKAGING CO
•
Filing: 1964-03-27
•
Granted: 1965-06-01
•
Expires: 1984-03-27
Abstract
No abstract record available.
Inventors
- 👤 William A Rohde
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:19
CPC Classifications
B; B65; B65D; B65D75/00; B65D75/52; B65D75/58; B65D75/5816; B65D75/5805; B65D75/5827; B65D75/5833; B65D75/04; B65D75/20
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
57 words
A RUPTURABLE ENVELOPE ADAPTED TO BE EDGEWISE SEALED TO FORM AN IMPERFORATE PACKAGE COMPRISING OF TWO OPPOSED IMPERFORATE THERMOPLASTIC FLEXIBLE SHEET MATERIAL LAYERS, AT LEAST ONE OF SAID LAYERS BEING FORMED WITH A RELATIVELY THINNED GROOVE LINE IN THE ENVELOPD BODY PORTION THEREOF COMPRISING A LINE OF PREDETERMINED OPENING EXTENDING INWARDLY OF THE AREA TO BE SEALED.
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) | 1968-05-31 | 1968-11-30 | 1969-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-05-31 | 1972-11-30 | 1973-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-05-31 | 1976-11-30 | 1977-06-01 | $7700.00 | Window Closed / Lapsed |