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US1732902A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Controlling mechanism for revolving doors
Assignee: HORN AND HARDART BAKING Co
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Filing: 1927-06-30
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Granted: 1929-10-22
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Expires: 1947-06-30
Abstract
No abstract record available.
Inventors
- 👤 Leonard W Lowther
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:13
CPC Classifications
E; E05; E05F; E05F15/00; E05F15/60; E05F15/603; E05F15/608; 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) | 1932-10-21 | 1933-04-22 | 1933-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1936-10-21 | 1937-04-22 | 1937-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1940-10-21 | 1941-04-22 | 1941-10-22 | $7700.00 | Window Closed / Lapsed |