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US913773A
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US
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Safety locking device for doors or other closures.
Assignee: BURDETT-ROWNTREE MANUFACTURING Co
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Filing: 1908-11-17
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Granted: 1909-03-02
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Expires: 1928-11-17
Abstract
No abstract record available.
Inventors
- 👤 Harold Rowntree
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 03:30
CPC Classifications
E; E05; E05F; E05F15/00; E05F15/40; E05F15/42; E05F15/44; Y; Y10; Y10S; Y10S16/00; Y10S16/20; Y10S292/00; Y10S292/12; Y10S292/65; Y10S70/00; Y10S70/48
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) | 1912-03-01 | 1912-08-31 | 1913-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1916-03-01 | 1916-08-31 | 1917-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1920-03-01 | 1920-08-31 | 1921-03-02 | $7700.00 | Window Closed / Lapsed |