Patent USRE27759E successfully refreshed from Google Patents.
USRE27759E
Expired / Lapsed
US
⏱️ 0.0 years remaining
Marshall dam
Assignee: —
•
Filing: 1971-12-14
•
Granted: 1973-09-18
•
Expires: 1991-12-14
Abstract
Abstract AN APPARATUS FOR SEALING PLASTIC FILM INTO AN ENCLOSED FORM WITH HIGH FREQUENCY ELECTRICAL ENERGY, THE FILM FIRST BEING FORMED INTO A CLOSED SHAPE AND CONTINUOUSLY SEALED IN THIS SHAPE, SAID APPARATUS CONTEMPLATING THE SEALING OF FILM SUCH AS POLYVINYL CHLORIDE RAPIDLY AND WITHOUT INTERRUPTION IN THE SEAL.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:25
CPC Classifications
B; B29; B29C; B29C65/00; B29C65/02; B29C65/04; B29C66/00; B29C66/40; B29C66/41; B29C66/43; B29C66/431; B29C66/4312; B29C66/432; B29C66/4322; B29C66/49; B29C66/80; B65; B65B; B65B51/00; B65B51/10; B65B51/22; B29C65/74; B29C65/745; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29C66/13; B29C66/133; B29C66/70; B29C66/71; B29L; B29L2031/00; B29L2031/712
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-09-17 | 1977-03-19 | 1977-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-17 | 1981-03-19 | 1981-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-17 | 1985-03-19 | 1985-09-18 | $7700.00 | Window Closed / Lapsed |