Patent US1393007A successfully refreshed from Google Patents.
US1393007A
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Experimental truss unit
Assignee: W M WELCH MANUFACTURING Co
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Filing: 1921-02-25
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Granted: 1921-10-11
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Expires: 1941-02-25
Abstract
No abstract record available.
Inventors
- 👤 Hugh E Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:11
CPC Classifications
G; G01; G01N; G01N3/00; G01N3/08; G01N3/14; G01L; G01L1/00; G01L1/04; G01L1/042
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) | 1924-10-10 | 1925-04-11 | 1925-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1928-10-10 | 1929-04-11 | 1929-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1932-10-10 | 1933-04-11 | 1933-10-11 | $7700.00 | Window Closed / Lapsed |