US3415066A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bearing bracket for rock bolts
Assignee: Individual
•
Filing: 1966-01-12
•
Granted: 1968-12-10
•
Expires: 1986-01-12
Abstract
No abstract record available.
Inventors
- 👤 Chester I Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:59
CPC Classifications
E; E21; E21D; E21D21/00; E21D21/0086; F; F16; F16B; F16B43/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1148491A
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US1854277A
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US2014419A
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US1995206A
Cited
US2682152A
Cited
DE1085480B
Cited
US3222873A
Cited
US3238731A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-12-10 | 1972-06-10 | 1972-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-10 | 1976-06-10 | 1976-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-10 | 1980-06-10 | 1980-12-10 | $7700.00 | Window Closed / Lapsed |