US828138A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heating system.
Assignee: Individual
•
Filing: 1905-04-06
•
Granted: 1906-08-07
•
Expires: 1925-04-06
Abstract
No abstract record available.
Inventors
- 👤 John O'neill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:25
CPC Classifications
B; B01; B01F; B01F33/00; B01F33/80; B01F33/84; E; E03; E03B; E03B7/00; E03B7/04; Y; Y10; Y10T; Y10T137/00; Y10T137/6416; Y10T137/6497; Y10T137/8593; Y10T137/85954
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) | 1909-08-06 | 1910-02-05 | 1910-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1913-08-06 | 1914-02-05 | 1914-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1917-08-06 | 1918-02-05 | 1918-08-07 | $7700.00 | Window Closed / Lapsed |