Patent US918522A successfully refreshed from Google Patents.
US918522A
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US
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Concealed fastening.
Assignee: Rothschild & Co
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Filing: 1907-09-30
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Granted: 1909-04-20
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Expires: 1927-09-30
Abstract
No abstract record available.
Inventors
- 👤 Ernest A Faller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 03:31
CPC Classifications
F; F16; F16B; F16B35/00; F16B35/04; F16B35/06; Y; Y10; Y10S; Y10S411/00; Y10S411/91
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) | 1912-04-19 | 1912-10-19 | 1913-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1916-04-19 | 1916-10-19 | 1917-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1920-04-19 | 1920-10-19 | 1921-04-20 | $7700.00 | Window Closed / Lapsed |