US3048409A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Material unloading apparatus
Assignee: Hawk Bilt Manufacturing Corp
•
Filing: 1961-01-31
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Granted: 1962-08-07
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Expires: 1981-01-31
Abstract
No abstract record available.
Inventors
- 👤 Keith D Elwick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:06
CPC Classifications
A; A01; A01C; A01C3/00; A01C3/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US440481A
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US747905A
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US993640A
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US1592475A
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US2360827A
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US2642680A
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US2504787A
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US2792229A
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US2882667A
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US2886332A
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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) | 1965-08-06 | 1966-02-05 | 1966-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-08-06 | 1970-02-05 | 1970-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-08-06 | 1974-02-05 | 1974-08-07 | $7700.00 | Window Closed / Lapsed |