Patent US3454441A successfully refreshed from Google Patents.
US3454441A
Expired / Lapsed
US
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Process for the industrial fabrication of plastic bags
Assignee: Individual
•
Filing: 1966-01-05
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Granted: 1969-07-08
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Expires: 1986-01-05
Abstract
No abstract record available.
Inventors
- 👤 Leo Spruyt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:18
CPC Classifications
B; B65; B65D; B65D33/00; B65D33/06; B65D33/08; B65D33/02; B31; B31B; B31B2155/00; B31B2155/003; B31B2160/00; B31B2160/10; B31B2170/00; B31B2170/20; B31B70/00; B31B70/60; B31B70/68; B31B70/74; B31B70/81; B31B70/82; B31B70/86; B31B70/876; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1052; Y10T156/1056; Y10T156/108
Claims Analysis
Total Claims: 0
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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) | 1972-07-07 | 1973-01-06 | 1973-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-07 | 1977-01-06 | 1977-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-07 | 1981-01-06 | 1981-07-08 | $7700.00 | Window Closed / Lapsed |