Patent US3412657A successfully refreshed from Google Patents.
US3412657A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surfacing machines
Assignee: Hamilton Float and Trowel Ltd
•
Filing: 1966-06-03
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Granted: 1968-11-26
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Expires: 1986-06-03
Abstract
No abstract record available.
Inventors
- 👤 Colizza Vincent Patrick
- 👤 Zochil Francesco Giovanni
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:02
CPC Classifications
E; E04; E04F; E04F21/00; E04F21/20; E04F21/24; E04F21/245; E04F21/248
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) | 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 |