US2775463A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Appliance hand truck having endless tread stair climbing device
Assignee: Individual
•
Filing: 1954-12-13
•
Granted: 1956-12-25
•
Expires: 1974-12-13
Abstract
No abstract record available.
Inventors
- 👤 Joseph C Chenette
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 07:18
CPC Classifications
B; B62; B62B; B62B5/00; B62B5/02; B62B2301/00; B62B2301/25; B62B2301/256; Y; Y10; Y10T; Y10T24/00; Y10T24/21; Y10T24/2175
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2165603A
Cited
US2214311A
Cited
US2301341A
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US2607606A
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US2519113A
Cited
US2620041A
Cited
US2623760A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-12-25 | 1960-06-25 | 1960-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-25 | 1964-06-25 | 1964-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-25 | 1968-06-25 | 1968-12-25 | $7700.00 | Window Closed / Lapsed |