Patent US887530A successfully refreshed from Google Patents.
US887530A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Door opener and closer.
Assignee: Individual
•
Filing: 1907-09-30
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Granted: 1908-05-12
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Expires: 1927-09-30
Abstract
No abstract record available.
Inventors
- 👤 De Foe Scott
- 👤 Charles G Blickle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:19
CPC Classifications
E; E05; E05F; E05F15/00; E05F15/50; E05F15/56; E05Y; E05Y2201/00; E05Y2201/40; E05Y2201/43; E05Y2201/434; Y; Y10; Y10S; Y10S292/00; Y10S292/12
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) | 1911-05-12 | 1911-11-11 | 1912-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1915-05-12 | 1915-11-11 | 1916-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1919-05-12 | 1919-11-11 | 1920-05-12 | $7700.00 | Window Closed / Lapsed |