US3439468A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of manufacturing bag closures
Assignee: Individual
•
Filing: 1964-11-02
•
Granted: 1969-04-22
•
Expires: 1984-11-02
Abstract
No abstract record available.
Inventors
- 👤 Edward Bok
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 01:38
CPC Classifications
B; B65; B65D; B65D33/00; B65D33/16; B65D33/1691; B65B; B65B51/00; B65B51/04; B65B51/06; B65B51/062; B65D75/00; B65D75/52; B65D75/58; B65D75/66; B65D75/68; B31; B31B; B31B70/00; B31B70/004; B65B9/00; B65B9/10; B65B9/20; B65B9/2056
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2740244A
Cited
US2977729A
Cited
US3021652A
Cited
US2929180A
Cited
US3045890A
Cited
US3116009A
Cited
US3173232A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-04-21 | 1972-10-21 | 1973-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-21 | 1976-10-21 | 1977-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-21 | 1980-10-21 | 1981-04-22 | $7700.00 | Window Closed / Lapsed |