US1274931A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for cleaning sewer-conduits.
Assignee: Individual
•
Filing: 1917-12-08
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Granted: 1918-08-06
•
Expires: 1937-12-08
Abstract
No abstract record available.
Inventors
- 👤 George W Otterson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:43
CPC Classifications
B; B08; B08B; B08B9/00; B08B9/08; B08B9/093; Y; Y10; Y10T; Y10T137/00; Y10T137/4238; Y10T137/4245; Y10T137/4259
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) | 1921-08-05 | 1922-02-04 | 1922-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1925-08-05 | 1926-02-04 | 1926-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1929-08-05 | 1930-02-04 | 1930-08-06 | $7700.00 | Window Closed / Lapsed |