Patent US2987809A successfully refreshed from Google Patents.
US2987809A
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Method of gapping stringer for slide fasteners
Assignee: CUE FASTENER Inc
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Filing: 1957-07-15
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Granted: 1961-06-13
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Expires: 1977-07-15
Abstract
No abstract record available.
Inventors
- 👤 John E Burbank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:16
CPC Classifications
A; A44; A44B; A44B19/00; A44B19/42; A44B19/58; Y; Y10; Y10T; Y10T24/00; Y10T24/25; Y10T24/2518; Y10T29/00; Y10T29/49; Y10T29/49782; Y10T29/53; Y10T29/53291; Y10T29/53309; Y10T83/00; Y10T83/04; Y10T83/0405; Y10T83/0419; Y10T83/0424; Y10T83/323
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2219165A
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US2396933A
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US2395869A
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US2568775A
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US2640255A
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US2697227A
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US2776466A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-06-12 | 1964-12-12 | 1965-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-12 | 1968-12-12 | 1969-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-12 | 1972-12-12 | 1973-06-13 | $7700.00 | Window Closed / Lapsed |