Patent US1406996A successfully refreshed from Google Patents.
Patent US534507A successfully refreshed from Google Patents.
US534507A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rod-coupling
Assignee: —
•
Filing: —
•
Granted: 1895-02-19
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Expires: 1912-02-19
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:17
CPC Classifications
E; E21; E21B; E21B17/00; E21B17/02; E21B17/04; E21B17/046; F; F16; F16B; F16B7/00; F16B7/22
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) | 1898-02-18 | 1898-08-20 | 1899-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1902-02-19 | 1902-08-21 | 1903-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1906-02-19 | 1906-08-21 | 1907-02-20 | $7700.00 | Window Closed / Lapsed |