US632532A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for cleaning tubes of evaporators or like apparatus.
Assignee: Individual
•
Filing: 1898-12-05
•
Granted: 1899-09-05
•
Expires: 1918-12-05
Abstract
No abstract record available.
Inventors
- 👤 Christian Markwort
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:57
CPC Classifications
B; B08; B08B; B08B9/00; B08B9/02; B08B9/027; B08B9/04; B08B9/043; B08B9/045
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) | 1902-09-05 | 1903-03-07 | 1903-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1906-09-05 | 1907-03-07 | 1907-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1910-09-05 | 1911-03-07 | 1911-09-06 | $7700.00 | Window Closed / Lapsed |