Patent US3821853A successfully refreshed from Google Patents.
Patent US1055674A successfully refreshed from Google Patents.
US1055674A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sheet-metal casing for drainage culverts, conduits, screens, wells, &c.
Assignee: SMITH METAL PERFORATING Co
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Filing: 1912-03-16
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Granted: 1913-03-11
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Expires: 1932-03-16
Abstract
No abstract record available.
Inventors
- 👤 Andrew Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:55
CPC Classifications
F; F16; F16L; F16L15/00; F16L15/006; E; E02; E02B; E02B11/00; E02B11/005; E03; E03B; E03B3/00; E03B3/06; E03B3/08; E03B3/16; F16L9/00; F16L9/02; F16L9/06
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) | 1916-03-10 | 1916-09-09 | 1917-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1920-03-10 | 1920-09-09 | 1921-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1924-03-10 | 1924-09-09 | 1925-03-11 | $7700.00 | Window Closed / Lapsed |