Patent US928481A successfully refreshed from Google Patents.
US928481A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drain-tile and sewer-outlet protector.
Assignee: Individual
•
Filing: 1909-03-11
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Granted: 1909-07-20
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Expires: 1929-03-11
Abstract
No abstract record available.
Inventors
- 👤 Ole A Tenold
- 👤 John A Tenold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:15
CPC Classifications
B; B01; B01D; B01D35/00; B01D35/14; B01D35/147; E; E03; E03F; E03F3/00; E03F3/04; E03F7/00; E03F7/06; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7898; Y10T137/7902
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) | 1912-07-19 | 1913-01-18 | 1913-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1916-07-19 | 1917-01-18 | 1917-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1920-07-19 | 1921-01-18 | 1921-07-20 | $7700.00 | Window Closed / Lapsed |