Patent US3520033A successfully refreshed from Google Patents.
US3520033A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Strap fastener
Assignee: OKUTO KK
•
Filing: 1968-11-04
•
Granted: 1970-07-14
•
Expires: 1988-11-04
Abstract
No abstract record available.
Inventors
- 👤 Genji Usuda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:11
CPC Classifications
A; A44; A44B; A44B11/00; A44B11/25; A44B11/258; A44B11/2588; A44D; A44D2200/00; A44D2200/10; A44D2200/12; Y; Y10; Y10S; Y10S24/00; Y10S24/30; Y10S24/38; Y10T; Y10T24/00; Y10T24/45; Y10T24/45152; Y10T24/4522; Y10T24/45225; Y10T24/4588
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-07-13 | 1974-01-12 | 1974-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-07-13 | 1978-01-12 | 1978-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-07-13 | 1982-01-12 | 1982-07-14 | $7700.00 | Window Closed / Lapsed |