Patent US2731671A successfully refreshed from Google Patents.
US2731671A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of manufacturing plastic slide fasteners
Assignee: Waldes Kohinoor Inc
•
Filing: 1951-06-06
•
Granted: 1956-01-24
•
Expires: 1971-06-06
Abstract
No abstract record available.
Inventors
- 👤 Zimmerman Abraham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:17
CPC Classifications
B; B29; B29D; B29D5/00; B29D5/02; A; A44; A44B; A44B19/00; A44B19/24; A44B19/40; A44B19/403; Y; Y10; Y10T; Y10T24/00; Y10T24/25; Y10T24/2539; Y10T29/00; Y10T29/49; Y10T29/49782
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
GB391146A
Cited
US1920138A
Cited
GB400958A
Cited
US2095209A
Cited
US2082619A
Cited
US2144591A
Cited
US2174159A
Cited
US2269880A
Cited
US2170421A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-01-23 | 1959-07-25 | 1960-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-23 | 1963-07-25 | 1964-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-23 | 1967-07-25 | 1968-01-24 | $7700.00 | Window Closed / Lapsed |