Patent US2753609A successfully refreshed from Google Patents.
US2753609A
Expired / Lapsed
US
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Double slide fastener sealing closures
Assignee: TREG Inc
•
Filing: 1952-05-29
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Granted: 1956-07-10
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Expires: 1972-05-29
Abstract
No abstract record available.
Inventors
- 👤 Gossner Louis Ernest Elwin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 06:07
CPC Classifications
A; A44; A44B; A44B19/00; A44B19/24; A44B19/32; Y; Y10; Y10T; Y10T24/00; Y10T24/25; Y10T24/2502; Y10T24/2505
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2535391A
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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) | 1959-07-10 | 1960-01-09 | 1960-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-10 | 1964-01-09 | 1964-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-10 | 1968-01-09 | 1968-07-10 | $7700.00 | Window Closed / Lapsed |