Patent US1049950A successfully refreshed from Google Patents.
Patent US949637A successfully refreshed from Google Patents.
US949637A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Boiler tube and flue cleaner.
Assignee: Individual
•
Filing: 1908-04-07
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Granted: 1910-02-15
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Expires: 1928-04-07
Abstract
No abstract record available.
Inventors
- 👤 Harry S Stormer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:59
CPC Classifications
B; B08; B08B; B08B9/00; B08B9/02; B08B9/027; B08B9/04; B08B9/049; B08B9/051
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) | 1913-02-14 | 1913-08-16 | 1914-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1917-02-14 | 1917-08-16 | 1918-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1921-02-14 | 1921-08-16 | 1922-02-15 | $7700.00 | Window Closed / Lapsed |