Patent US647758A successfully refreshed from Google Patents.
US647758A
Expired / Lapsed
US
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Water-heater.
Assignee: Individual
•
Filing: 1899-04-15
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Granted: 1900-04-17
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Expires: 1919-04-15
Abstract
No abstract record available.
Inventors
- 👤 Robert S Orr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:15
CPC Classifications
F; F23; F23N; F23N1/00; F23N1/08; F23N1/087; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2511; Y10T137/2931; Y10T137/2937; Y10T137/294
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) | 1903-04-17 | 1903-10-17 | 1904-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1907-04-17 | 1907-10-17 | 1908-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1911-04-17 | 1911-10-17 | 1912-04-17 | $7700.00 | Window Closed / Lapsed |