Patent US3915308A successfully refreshed from Google Patents.
US2806708A
Expired / Lapsed
US
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Collapsible hand truck
Assignee: Individual
•
Filing: 1954-05-21
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Granted: 1957-09-17
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Expires: 1974-05-21
Abstract
No abstract record available.
Inventors
- 👤 Arthur K Finstad
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 00:16
CPC Classifications
B; B62; B62B; B62B1/00; B62B1/10; B62B1/12; B62B2205/00; B62B2205/20; Y; Y10; Y10T; Y10T292/00; Y10T292/08; Y10T292/087; Y10T292/0871
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1215771A
Cited
US1242418A
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US1503462A
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US1481223A
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US1477692A
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FR777422A
Cited
US2450304A
Cited
US2490189A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-16 | 1961-03-18 | 1961-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-16 | 1965-03-18 | 1965-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-16 | 1969-03-18 | 1969-09-17 | $7700.00 | Window Closed / Lapsed |