US3543379A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for manufacturing plastic tubing for reclosable bags
Assignee: Individual
•
Filing: 1967-08-22
•
Granted: 1970-12-01
•
Expires: 1987-08-22
Abstract
No abstract record available.
Inventors
- 👤 Kakuji Naito
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:01
CPC Classifications
B; B31; B31B; B31B70/00; B31B70/74; B31B70/81; B31B70/813; B31B70/8131; B31B2160/00; B31B2160/10; Y; Y10; Y10S; Y10S24/00; Y10S24/30; Y10S24/50; Y10T; Y10T156/00; Y10T156/10; Y10T156/1052; Y10T156/1054; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49863; Y10T29/4987; Y10T29/49876; Y10T29/53; Y10T29/53657; Y10T29/53978
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2548004A
Cited
US2666466A
Cited
US3033257A
Cited
US2990875A
Cited
US3291177A
Cited
US3198228A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-11-30 | 1974-06-01 | 1974-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-30 | 1978-06-01 | 1978-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-30 | 1982-06-01 | 1982-12-01 | $7700.00 | Window Closed / Lapsed |