US1015491A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Motor-gearing for revolving doors.
Assignee: VAN KANNEL REVOLVING DOOR Co
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Filing: 1911-03-14
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Granted: 1912-01-23
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Expires: 1931-03-14
Abstract
No abstract record available.
Inventors
- 👤 Edward C Haviland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:15
CPC Classifications
E; E05; E05F; E05F15/00; E05F15/60; E05F15/603; E05F15/608; E06; E06B; E06B3/00; E06B3/90; E05Y; E05Y2900/00; E05Y2900/10; E05Y2900/13; E05Y2900/132
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) | 1915-01-22 | 1915-07-24 | 1916-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1919-01-22 | 1919-07-24 | 1920-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1923-01-22 | 1923-07-24 | 1924-01-23 | $7700.00 | Window Closed / Lapsed |