US3048256A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Moving handrail
Assignee: Hewitt Robins Inc
•
Filing: 1958-07-31
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Granted: 1962-08-07
•
Expires: 1978-07-31
Abstract
No abstract record available.
Inventors
- 👤 Clayton H Skinner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 00:03
CPC Classifications
B; B66; B66B; B66B23/00; B66B23/02; B66B23/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US829152A
Cited
US1101209A
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US2028358A
Cited
US2526324A
Cited
US2373764A
Cited
US2628700A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-08-06 | 1966-02-05 | 1966-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-08-06 | 1970-02-05 | 1970-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-08-06 | 1974-02-05 | 1974-08-07 | $7700.00 | Window Closed / Lapsed |