Patent US2698661A successfully refreshed from Google Patents.
Patent US3448915A successfully refreshed from Google Patents.
US3448915A
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US
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Tapered bags or sleeves made from plastic material sheeting and joined by tearable perforation lines
Assignee: Windmoeller and Hoelscher KG
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Filing: 1967-08-21
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Granted: 1969-06-10
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Expires: 1987-08-21
Abstract
No abstract record available.
Inventors
- 👤 August Schwarzkopf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 05:39
CPC Classifications
B; B65; B65D; B65D27/00; B29; B29C; B29C65/00; B29C65/02; B29C65/78; B29C65/7858; B29C65/7888; B29C65/7891; B29C66/00; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29C66/345; B29C66/3452; B29C66/40; B29C66/41; B29C66/43; B29C66/431; B29C66/4312; B29C66/43129; B29C66/80; B29C66/83; B29C66/832; B29C66/8322; B31; B31B; B31B2155/00; B31B2155/002; B31B2160/00; B31B2160/30; B31B2170/00; B31B2170/20
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) | 1972-06-09 | 1972-12-09 | 1973-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-09 | 1976-12-09 | 1977-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-09 | 1980-12-09 | 1981-06-10 | $7700.00 | Window Closed / Lapsed |