US3441107A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flexible guide clamp safety system
Assignee: Otis Elevator Co
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Filing: 1967-06-26
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Granted: 1969-04-29
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Expires: 1987-06-26
Abstract
No abstract record available.
Inventors
- 👤 Benjamin Graham Thorne
- 👤 Harold James Lyons
- 👤 Albert Vincent Dingfeld
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 04:04
CPC Classifications
B; B66; B66B; B66B5/00; B66B5/02; B66B5/04; B66B5/16; B66B5/18; B66B5/22
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) | 1972-04-28 | 1972-10-28 | 1973-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-28 | 1976-10-28 | 1977-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-28 | 1980-10-28 | 1981-04-29 | $7700.00 | Window Closed / Lapsed |