Patent FR469976A successfully refreshed from Google Patents.
Patent US815436A successfully refreshed from Google Patents.
US815436A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spring edge-supporting hook.
Assignee: Individual
•
Filing: 1905-06-21
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Granted: 1906-03-20
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Expires: 1925-06-21
Abstract
No abstract record available.
Inventors
- 👤 Augustus T Knorzer
- 👤 Simon Peter Danner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:04
CPC Classifications
A; A47; A47C; A47C23/00; A47C23/04; A47C23/05; A47C23/0515
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) | 1909-03-19 | 1909-09-18 | 1910-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1913-03-19 | 1913-09-18 | 1914-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1917-03-19 | 1917-09-18 | 1918-03-20 | $7700.00 | Window Closed / Lapsed |