Patent US2756491A successfully refreshed from Google Patents.
US2756491A
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US
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Manufacture of sliders for slide fasteners
Assignee: Conmar Products Corp
•
Filing: 1952-09-16
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Granted: 1956-07-31
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Expires: 1972-09-16
Abstract
No abstract record available.
Inventors
- 👤 Robert I Prupis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 07:29
CPC Classifications
B; B29; B29D; B29D5/00; A; A44; A44B; A44B19/00; A44B19/24; A44B19/26; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49782; Y10T29/49783; Y10T29/49789; Y10T29/49798
Claims Analysis
Total Claims: 0
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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) | 1959-07-31 | 1960-01-30 | 1960-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-31 | 1964-01-30 | 1964-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-31 | 1968-01-30 | 1968-07-31 | $7700.00 | Window Closed / Lapsed |