US2979113A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat sealing apparatus
Assignee: Bemis Brothers Bag Co
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Filing: 1960-01-11
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Granted: 1961-04-11
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Expires: 1980-01-11
Abstract
No abstract record available.
Inventors
- 👤 Wilfred E Stageberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 00:56
CPC Classifications
B; B29; B29C; B29C66/00; B29C66/01; B29C66/05; B29C66/10; B29C66/13; B29C66/137; B29C65/00; B29C65/02; B29C65/14; B29C65/1429; B29C65/1448; B29C65/1454; B29C65/1458; B29C65/74; B29C65/749; B29C66/11; B29C66/112; B29C66/1122; B29C66/40; B29C66/41; B29C66/43; B29C66/80; B29C66/83; B29C66/836; B29C2793/00; B29C2793/0081; B29C65/10; B29C65/106; B29C65/1403; B29C65/1412; Y; Y10; Y10T; Y10T156/00; Y10T156/12; Y10T156/1313
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) | 1964-04-10 | 1964-10-10 | 1965-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-10 | 1968-10-10 | 1969-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-10 | 1972-10-10 | 1973-04-11 | $7700.00 | Window Closed / Lapsed |