US1325348A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for cleaning boiler-tubes.
Assignee: Individual
•
Filing: 1919-06-11
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Granted: 1919-12-16
•
Expires: 1939-06-11
Abstract
No abstract record available.
Inventors
- 👤 Mark K Bowman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:09
CPC Classifications
B; B08; B08B; B08B9/00; B08B9/02; B08B9/027; B08B9/04; B08B9/053; B08B9/055; B08B9/0553
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) | 1922-12-15 | 1923-06-16 | 1923-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1926-12-15 | 1927-06-16 | 1927-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1930-12-15 | 1931-06-16 | 1931-12-16 | $7700.00 | Window Closed / Lapsed |