Patent US511472A successfully refreshed from Google Patents.
US511472A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tubular structure filled with gaseous fluid
Assignee: —
•
Filing: —
•
Granted: 1893-12-26
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Expires: 1910-12-26
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:53
CPC Classifications
E; E04; E04H; E04H15/00; E04H15/20
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) | 1896-12-25 | 1897-06-26 | 1897-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1900-12-26 | 1901-06-27 | 1901-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1904-12-26 | 1905-06-27 | 1905-12-27 | $7700.00 | Window Closed / Lapsed |