Patent US2668403A successfully refreshed from Google Patents.
US2668403A
Expired / Lapsed
US
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Method of making heat-sealed and heat-shrunk package
Assignee: Individual
•
Filing: 1951-02-17
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Granted: 1954-02-09
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Expires: 1971-02-17
Abstract
No abstract record available.
Inventors
- 👤 Jr Herbert Rumsey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:15
CPC Classifications
B; B65; B65B; B65B53/00; B65B53/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2008167A
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US1923452A
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US2029131A
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US2131699A
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US2179504A
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US2168651A
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US2149030A
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US2301086A
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US2331794A
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US2518711A
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US2545243A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-02-08 | 1957-08-10 | 1958-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-02-08 | 1961-08-10 | 1962-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-02-08 | 1965-08-10 | 1966-02-09 | $7700.00 | Window Closed / Lapsed |