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US943306A
Expired / Lapsed
US
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Corrugated sheet-metal culvert.
Assignee: Individual
•
Filing: 1909-04-29
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Granted: 1909-12-14
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Expires: 1929-04-29
Abstract
No abstract record available.
Inventors
- 👤 Hugh W Harry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:06
CPC Classifications
F; F16; F16L; F16L59/00; F16L59/02; F16L59/021; F16L59/022
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) | 1912-12-13 | 1913-06-14 | 1913-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1916-12-13 | 1917-06-14 | 1917-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1920-12-13 | 1921-06-14 | 1921-12-14 | $7700.00 | Window Closed / Lapsed |