Patent US3421476A successfully refreshed from Google Patents.
US3421476A
Expired / Lapsed
US
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Apparatus for applying materials to localized areas of a roadway surface
Assignee: Mattos Const Co Inc
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Filing: 1967-03-09
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Granted: 1969-01-14
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Expires: 1987-03-09
Abstract
No abstract record available.
Inventors
- 👤 Donald Joseph Mattos
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 15:30
CPC Classifications
E; E01; E01C; E01C23/00; E01C23/16; E01C23/20; E01C23/22; E01C23/222; E01C23/163; E01C23/18; E01H; E01H1/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-14 | 1972-07-15 | 1973-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-14 | 1976-07-15 | 1977-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-14 | 1980-07-15 | 1981-01-14 | $7700.00 | Window Closed / Lapsed |