US2823721A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sliderless fastener closure
Assignee: Flexigrip Inc
•
Filing: 1956-08-16
•
Granted: 1958-02-18
•
Expires: 1976-08-16
Abstract
No abstract record available.
Inventors
- 👤 Emil F Svec
- 👤 Karel J Staller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:54
CPC Classifications
B; B65; B65D; B65D33/00; B65D33/16; B65D33/25; B65D33/2508; B65D33/2541; A; A24; A24F; A24F23/00; A24F23/02; A45; A45C; A45C13/00; A45C13/10; A45C13/1023; A44; A44B; A44B19/00; A44B19/10; A44B19/16; Y; Y10; Y10S; Y10S24/00; Y10S24/30; Y10S24/38; Y10S24/39; Y10T; Y10T24/00; Y10T24/45; Y10T24/45152; Y10T24/45157; Y10T24/45168
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-02-17 | 1961-08-19 | 1962-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-02-17 | 1965-08-19 | 1966-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-02-17 | 1969-08-19 | 1970-02-18 | $7700.00 | Window Closed / Lapsed |