Patent US473591A successfully refreshed from Google Patents.
Patent US478688A successfully refreshed from Google Patents.
US478688A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Range-boiler attachment
Assignee: —
•
Filing: —
•
Granted: 1892-07-12
•
Expires: 1909-07-12
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:07
CPC Classifications
G; G05; G05D; G05D23/00; G05D23/01; G05D23/12; G05D23/125; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7737
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1895-07-12 | 1896-01-11 | 1896-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1899-07-12 | 1900-01-11 | 1900-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1903-07-13 | 1904-01-12 | 1904-07-13 | $7700.00 | Window Closed / Lapsed |