US2804191A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Intermediate station for high speed moving sidewalk
Assignee: ADAMSON STEPHENS Manufacturing CO
•
Filing: 1955-09-23
•
Granted: 1957-08-27
•
Expires: 1975-09-23
Abstract
No abstract record available.
Inventors
- 👤 William F King
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:34
CPC Classifications
B; B66; B66B; B66B29/00; B66B29/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US558180A
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CA733952A
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US639154A
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US1412969A
Cited
US1871996A
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FR828151A
Cited
US2599221A
Cited
US2536961A
Cited
US2641351A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-08-26 | 1961-02-25 | 1961-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-26 | 1965-02-25 | 1965-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-26 | 1969-02-25 | 1969-08-27 | $7700.00 | Window Closed / Lapsed |