US3559329A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bag with one-way entrance
Assignee: Individual
•
Filing: 1969-02-28
•
Granted: 1971-02-02
•
Expires: 1989-02-28
Abstract
Abstract A BAG, CONTAINER OR THE LIKE HAVING A CLOSURE ASSOCIATED WITH AN OPENING THEREIN WITH THE CLOSURE INCORPORATING A ONE-WAY ENTRANCE IN THE FORM OF A CONICAL MEMBER HAVING AN OPEN APEX DEPENDING INTO THE BAG, CONTAINER OR THE LIKE WITH THE CONICAL MEMBER BEING CONSTRUCTED FROM A PERIPHERALLY EXPANDIBLE MEMBER TO ENABLE THE OPEN LOWER APEX THEREOF TO EXPAND WHEN ENTRY FROM ABOVE IS DESIRED BUT REMAIN CLOSED WHEN EGRESS IS ATTEMPTED FROM THE INTERIOR OF THE BAG OR CONTAINER.
Inventors
- 👤 Winton C Chiu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:48
CPC Classifications
A; A01; A01K; A01K97/00; A01K97/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-01 | 1974-08-03 | 1975-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-01 | 1978-08-03 | 1979-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-01 | 1982-08-03 | 1983-02-02 | $7700.00 | Window Closed / Lapsed |