Patent US2520575A successfully refreshed from Google Patents.
Patent US2444706A successfully refreshed from Google Patents.
US2444706A
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Slide fastener machine
Assignee: Individual
•
Filing: 1944-08-12
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Granted: 1948-07-06
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Expires: 1964-08-12
Abstract
No abstract record available.
Inventors
- 👤 Loew Sigmund
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:58
CPC Classifications
B; B21; B21D; B21D53/00; B21D53/46; B21D53/50; Y; Y10; Y10S; Y10S83/00; Y10S83/917; Y10S83/921; Y10T; Y10T29/00; Y10T29/49; Y10T29/49782; Y10T29/49785; Y10T29/51; Y10T29/5101; Y10T29/5116; Y10T29/5117; Y10T29/5183; Y10T83/00; Y10T83/444; Y10T83/463; Y10T83/4635; Y10T83/929; Y10T83/9411; Y10T83/9442; Y10T83/9444
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2078017A
Cited
US2201068A
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US2302075A
Cited
US2310660A
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US2299606A
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US2338884A
Cited
US2287507A
Cited
US2336662A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-07-06 | 1952-01-05 | 1952-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-07-06 | 1956-01-05 | 1956-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-07-06 | 1960-01-05 | 1960-07-06 | $7700.00 | Window Closed / Lapsed |