US1707648A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Door-operating mechanism
Assignee: Schindler Haughton Elevator Corp
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Filing: 1927-07-02
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Granted: 1929-04-02
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Expires: 1947-07-02
Abstract
No abstract record available.
Inventors
- 👤 Floyd F Turner
- 👤 John A Brubaker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:56
CPC Classifications
B; B66; B66B; B66B13/00; B66B13/02; B66B13/14; B66B13/143
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1932-04-01 | 1932-10-01 | 1933-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1936-04-01 | 1936-10-01 | 1937-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1940-04-01 | 1940-10-01 | 1941-04-02 | $7700.00 | Window Closed / Lapsed |