US3422928A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Analog computer variable interval dispatcher for an elevator system with trip time as a measure of traffic
Assignee: Otis Elevator Co
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Filing: 1964-04-23
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Granted: 1969-01-21
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Expires: 1984-04-23
Abstract
No abstract record available.
Inventors
- 👤 William Henry Bruns
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:17
CPC Classifications
B; B66; B66B; B66B1/00; B66B1/02; B66B1/06; B66B1/14; B66B1/18; G; G06; G06G; G06G7/00; G06G7/48; G06G7/62; G06G7/63; G06G7/635; G06G7/76
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-21 | 1972-07-22 | 1973-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-21 | 1976-07-22 | 1977-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-21 | 1980-07-22 | 1981-01-21 | $7700.00 | Window Closed / Lapsed |