Patent US3199506A successfully refreshed from Google Patents.
US3199506A
Expired / Lapsed
US
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Device for clearing wide roads or runways covered with snow and ice
Assignee: Bertin Technologies SAS
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Filing: 1963-02-27
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Granted: 1965-08-10
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Expires: 1983-02-27
Abstract
No abstract record available.
Inventors
- 👤 Bertin Jean Henri
- 👤 Dubois Ernest
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:07
CPC Classifications
E; E01; E01H; E01H5/00; E01H5/10; E01H5/106
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US600106A
Cited
US1408471A
Cited
GB190146A
Cited
GB410784A
Cited
US2531884A
Cited
US2494720A
Cited
US2802286A
Cited
FR1191114A
Cited
US3041748A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-09 | 1969-02-08 | 1969-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-09 | 1973-02-08 | 1973-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-09 | 1977-02-08 | 1977-08-10 | $7700.00 | Window Closed / Lapsed |