Patent US3949750A successfully refreshed from Google Patents.
US2642680A
Expired / Lapsed
US
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Snowplow
Assignee: Individual
•
Filing: 1946-12-30
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Granted: 1953-06-23
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Expires: 1966-12-30
Abstract
No abstract record available.
Inventors
- 👤 Gordon E Curtis
- 👤 Walter A Oberbeck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:01
CPC Classifications
E; E01; E01H; E01H5/00; E01H5/04; E01H5/08; E01H5/09; E01H5/098; E01H5/045
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1577561A
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US1814695A
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US2094536A
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US2103510A
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US2118851A
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US2168866A
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US2194662A
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US2198237A
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US2200623A
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US2408459A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-22 | 1956-12-22 | 1957-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-22 | 1960-12-22 | 1961-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-22 | 1964-12-22 | 1965-06-23 | $7700.00 | Window Closed / Lapsed |