US3452460A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Impeller for rotary snow removal apparatus
Assignee: American Yard Products Inc
•
Filing: 1966-10-31
•
Granted: 1969-07-01
•
Expires: 1986-10-31
Abstract
No abstract record available.
Inventors
- 👤 John M Cope
- 👤 John V Webster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:44
CPC Classifications
E; E01; E01H; E01H5/00; E01H5/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2183976A
Cited
US2307412A
Cited
US2642680A
Cited
US2768453A
Cited
US2799952A
Cited
US2919504A
Cited
US3359661A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-30 | 1972-12-30 | 1973-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-30 | 1976-12-30 | 1977-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-30 | 1980-12-30 | 1981-07-01 | $7700.00 | Window Closed / Lapsed |