US2430642A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety trestle
Assignee: Individual
•
Filing: 1944-07-28
•
Granted: 1947-11-11
•
Expires: 1964-07-28
Abstract
No abstract record available.
Inventors
- 👤 Mahaffey Jesse Lynn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:01
CPC Classifications
E; E04; E04G; E04G1/00; E04G1/28; E04G1/30; B; B25; B25H; B25H1/00; B25H1/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US524270A
Cited
US711384A
Cited
US840636A
Cited
US1376924A
Cited
US1653763A
Cited
US1593945A
Cited
US1721670A
Cited
US2171284A
Cited
US2335046A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-11-10 | 1951-05-12 | 1951-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-11-10 | 1955-05-12 | 1955-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-11-10 | 1959-05-12 | 1959-11-11 | $7700.00 | Window Closed / Lapsed |