US3511342A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Elevator control for ascertaining the capability of cars to serve hall calls
Assignee: Schindler Elevator Corp
•
Filing: 1965-10-08
•
Granted: 1970-05-12
•
Expires: 1985-10-08
Abstract
No abstract record available.
Inventors
- 👤 Donivan L Hall
- 👤 William C Susor
- 👤 James A Kuzara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:45
CPC Classifications
B; B66; B66B; B66B1/00; B66B1/02; B66B1/06; B66B1/14; B66B1/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3146858A
Cited
US3379284A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-05-11 | 1973-11-10 | 1974-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-05-11 | 1977-11-10 | 1978-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-05-11 | 1981-11-10 | 1982-05-12 | $7700.00 | Window Closed / Lapsed |