US2785286A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Moving stairway panelling
Assignee: Otis Elevator Co
•
Filing: 1952-11-08
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Granted: 1957-03-12
•
Expires: 1972-11-08
Abstract
No abstract record available.
Inventors
- 👤 Lichtgarn James
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:20
CPC Classifications
B; B66; B66B; B66B23/00; B66B23/22; B66B23/225; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24149; Y10T428/24165
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1442463A
Cited
US1917560A
Cited
GB521781A
Cited
US2398799A
Cited
US2258354A
Cited
US2282050A
Cited
GB677262A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-03-11 | 1960-09-10 | 1961-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-03-11 | 1964-09-10 | 1965-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-03-11 | 1968-09-10 | 1969-03-12 | $7700.00 | Window Closed / Lapsed |