Patent US3517883A successfully refreshed from Google Patents.
US3517883A
Expired / Lapsed
US
⏱️ 0.0 years remaining
One piece double rail anchor
Assignee: Woodings Verona Tool Works
•
Filing: 1968-10-16
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Granted: 1970-06-30
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Expires: 1988-10-16
Abstract
No abstract record available.
Inventors
- 👤 Frederick William Holstein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 01:12
CPC Classifications
E; E01; E01B; E01B9/00; E01B9/66; E01B9/38; E01B9/44; E01B9/46; E01B9/48; E01B9/486
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) | 1973-06-29 | 1973-12-29 | 1974-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-06-29 | 1977-12-29 | 1978-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-06-29 | 1981-12-29 | 1982-06-30 | $7700.00 | Window Closed / Lapsed |