US3477151A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Snowplow
Assignee: ROBERT C ZANELLA
•
Filing: 1965-07-06
•
Granted: 1969-11-11
•
Expires: 1985-07-06
Abstract
No abstract record available.
Inventors
- 👤 Robert C Zanella
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 07:09
CPC Classifications
E; E01; E01H; E01H5/00; E01H5/04; E01H5/06; E01H5/065
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1454757A
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US2006384A
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FR873189A
Cited
US2230704A
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US2643472A
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US2646633A
Cited
US2938285A
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US3157099A
Cited
US3061955A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-11-10 | 1973-05-12 | 1973-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-10 | 1977-05-12 | 1977-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-10 | 1981-05-12 | 1981-11-11 | $7700.00 | Window Closed / Lapsed |