US2609112A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Elevator apparatus
Assignee: Individual
•
Filing: 1949-03-26
•
Granted: 1952-09-02
•
Expires: 1969-03-26
Abstract
No abstract record available.
Inventors
- 👤 James G Mckenzie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:13
CPC Classifications
B; B66; B66B; B66B9/00; B66B9/10; E; E04; E04H; E04H6/00; E04H6/08; E04H6/12; E04H6/18; E04H6/187
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US465587A
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US904717A
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US1826357A
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US1857431A
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US1882656A
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US1902946A
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US1930239A
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US2113308A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-09-02 | 1956-03-03 | 1956-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-02 | 1960-03-03 | 1960-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-02 | 1964-03-03 | 1964-09-02 | $7700.00 | Window Closed / Lapsed |