US3412658A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Road surfacing device
Assignee: JOHN E GRIFFIN
•
Filing: 1966-11-14
•
Granted: 1968-11-26
•
Expires: 1986-11-14
Abstract
No abstract record available.
Inventors
- 👤 John E Griffin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:23
CPC Classifications
E; E01; E01C; E01C19/00; E01C19/22; E01C19/30; E01C19/34; E01C19/40; E01C19/402; E01C19/48; E01C19/4833; E01C19/484
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3097537A
Cited
US2006316A
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US2187080A
Cited
US2141301A
Cited
US2297978A
Cited
US2372163A
Cited
US2400321A
Cited
US2651980A
Cited
US3008388A
Cited
US3224348A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-11-26 | 1972-05-27 | 1972-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-26 | 1976-05-27 | 1976-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-26 | 1980-05-27 | 1980-11-26 | $7700.00 | Window Closed / Lapsed |