Patent US3081892A successfully refreshed from Google Patents.
US3081892A
Expired / Lapsed
US
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Hand truck
Assignee: Individual
•
Filing: 1962-03-02
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Granted: 1963-03-19
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Expires: 1982-03-02
Abstract
No abstract record available.
Inventors
- 👤 Burton E Cook
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 02:59
CPC Classifications
B; B62; B62B; B62B1/00; B62B1/10; B62B1/14; B62B2203/00; B62B2203/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2447300A
Cited
US2541819A
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US2484531A
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US2738086A
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US2721086A
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US2838190A
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US3010588A
Cited
US2903147A
Cited
US2942745A
Cited
US3051331A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-03-18 | 1966-09-17 | 1967-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-03-18 | 1970-09-17 | 1971-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-03-18 | 1974-09-17 | 1975-03-19 | $7700.00 | Window Closed / Lapsed |