Patent US1021390A successfully refreshed from Google Patents.
US1021390A
Expired / Lapsed
US
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Apertured bolt applicable especially for fixing rails onto the wooden sleepers.
Assignee: Individual
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Filing: 1910-10-20
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Granted: 1912-03-26
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Expires: 1930-10-20
Abstract
No abstract record available.
Inventors
- 👤 Raoul Diaz Wagner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:08
CPC Classifications
F; F16; F16B; F16B13/00; F16B13/12; F16B13/124
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) | 1915-03-26 | 1915-09-25 | 1916-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1919-03-26 | 1919-09-25 | 1920-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1923-03-26 | 1923-09-25 | 1924-03-26 | $7700.00 | Window Closed / Lapsed |