US2455474A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Excavator
Assignee: HI WAY SERVICE CORP
•
Filing: 1945-02-05
•
Granted: 1948-12-07
•
Expires: 1965-02-05
Abstract
No abstract record available.
Inventors
- 👤 Edward A Drott
- 👤 Joseph H Kerber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:49
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/28; E02F3/36; E02F3/40; E02F3/413; E02F3/4133
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2146807A
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US2295917A
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US2306474A
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US2348796A
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US2303852A
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US2326338A
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US2319921A
Cited
US2317075A
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US2345620A
Cited
US2387656A
Cited
US2413096A
Cited
US2393299A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-12-07 | 1952-06-07 | 1952-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-12-07 | 1956-06-07 | 1956-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-12-07 | 1960-06-07 | 1960-12-07 | $7700.00 | Window Closed / Lapsed |