US2451294A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power-operated scraper
Assignee: HYDRO SPEED EQUIPMENT CO
•
Filing: 1944-08-08
•
Granted: 1948-10-12
•
Expires: 1964-08-08
Abstract
No abstract record available.
Inventors
- 👤 Leland T Mcgee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:46
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/64; E02F3/65; E02F3/6454; E02F3/6463; E02F3/651; E02F3/653
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1877958A
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US1870673A
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US1939950A
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US2329210A
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US2348910A
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US2380021A
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US2386192A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-10-12 | 1952-04-12 | 1952-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-10-12 | 1956-04-12 | 1956-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-10-12 | 1960-04-12 | 1960-10-12 | $7700.00 | Window Closed / Lapsed |