US2437793A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Zipper manufacturing machinery
Assignee: Individual
•
Filing: 1944-09-23
•
Granted: 1948-03-16
•
Expires: 1964-09-23
Abstract
No abstract record available.
Inventors
- 👤 Silberman David
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 05:06
CPC Classifications
B; B21; B21D; B21D53/00; B21D53/46; B21D53/50; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49782; Y10T29/49785; Y10T29/51; Y10T29/5101; Y10T29/5116; Y10T29/5117; Y10T29/5147; Y10T29/5148; Y10T29/5183; Y10T29/53; Y10T29/53291; Y10T29/53304; Y10T83/00; Y10T83/444; Y10T83/4516
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) | 1951-03-16 | 1951-09-15 | 1952-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-03-16 | 1955-09-15 | 1956-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-03-16 | 1959-09-15 | 1960-03-16 | $7700.00 | Window Closed / Lapsed |