US2859835A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mechanism for opening and closing elevator cabs and hatchways
Assignee: Toledo Scale Corp
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Filing: 1955-02-24
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Granted: 1958-11-11
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Expires: 1975-02-24
Abstract
No abstract record available.
Inventors
- 👤 Joseph H Borden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:31
CPC Classifications
B; B66; B66B; B66B13/00; B66B13/02; B66B13/12; E; E05; E05F; E05F15/00; E05F15/60; E05F15/603; E05F15/632; E05F15/643; E05Y; E05Y2900/00; E05Y2900/10; E05Y2900/104
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1534210A
Cited
US1937029A
Cited
US1960860A
Cited
US1950150A
Cited
US2077659A
Cited
US2432293A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-11-10 | 1962-05-12 | 1962-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-10 | 1966-05-12 | 1966-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-10 | 1970-05-12 | 1970-11-11 | $7700.00 | Window Closed / Lapsed |