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US2820643A
Expired / Lapsed
US
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Hand truck and dolly
Assignee: Individual
•
Filing: 1955-07-25
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Granted: 1958-01-21
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Expires: 1975-07-25
Abstract
No abstract record available.
Inventors
- 👤 Cohn Louis Israel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:19
CPC Classifications
B; B62; B62B; B62B1/00; B62B1/002; B62B2202/00; B62B2202/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US882938A
Cited
US887821A
Cited
US1150964A
Cited
US1716611A
Cited
US2301341A
Cited
US2558144A
Cited
US2459275A
Cited
US2519113A
Cited
US2683610A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-01-20 | 1961-07-22 | 1962-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-20 | 1965-07-22 | 1966-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-20 | 1969-07-22 | 1970-01-21 | $7700.00 | Window Closed / Lapsed |