US3580780A
Expired / Lapsed
US
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Method and apparatus for bar sealing of girdle panels
Assignee: Singer Co
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Filing: 1969-05-07
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Granted: 1971-05-25
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Expires: 1989-05-07
Abstract
Abstract THIS DISCLOSURE RELATES TO A METHOD AND APPARATUS FOR BAR SEALING OR GIRDLE PANELS TO FORM CURVED SIDE SEAMS, INITIALLY HELD IN PLACE BY CLAMPING AND FOLDING THE SAME OVER A CURVED SEALING DIE, WHICH IS SUBSEQUENTLY MATED WITH A SECOND DIE ALONG THE SEAM TO EFFECT A SEAL, THERMALLY OR DIELECTRICALLY.
Inventors
- 👤 Herbert G Klawunn
- 👤 John Addison Herr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:33
CPC Classifications
B; B29; B29C; B29C65/00; B29C65/48; B29C65/50; B29C65/5057; A; A41; A41D; A41D27/00; A41D27/24; A41D27/245; B29C65/02; B29C65/18; B29C65/5092; B29C66/00; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29C66/13; B29C66/135; B29C66/1352; B29C66/301; B29C66/40; B29C66/41; B29C66/43; B29C66/432; B29C66/80; B29C66/81; B29C66/814; B29C66/8141; B29C66/81411; B29C66/81421; B29C66/81422; B29C66/81423; B29C66/83; B29C66/832; B29C66/8322; B29C65/4805; B29C65/483; B29C66/70; B29C66/72; B29C66/729; B29C66/7292; B29C66/7294; B29C66/72941; B29K; B29K2313/00
Claims Analysis
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-05-24 | 1974-11-23 | 1975-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-24 | 1978-11-23 | 1979-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-24 | 1982-11-23 | 1983-05-25 | $7700.00 | Window Closed / Lapsed |