US2434657A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mechanism for heat sealing package seam joints
Assignee: National Urn Bag Co Inc
•
Filing: 1941-07-16
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Granted: 1948-01-20
•
Expires: 1961-07-16
Abstract
No abstract record available.
Inventors
- 👤 Hans O Irmscher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:21
CPC Classifications
B; B65; B65B; B65B51/00; B65B51/10; B65B51/26; B65B51/30; B65B51/303
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1688499A
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US1851676A
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US1993442A
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US2290158A
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US2182187A
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US2114624A
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US2281187A
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US2145941A
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US2206761A
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US2277289A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-01-19 | 1951-07-21 | 1952-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-01-19 | 1955-07-21 | 1956-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-01-19 | 1959-07-21 | 1960-01-20 | $7700.00 | Window Closed / Lapsed |