Patent US2808296A successfully refreshed from Google Patents.
US2808296A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Scaffold plank
Assignee: Stinson Manufacturing Co Inc
•
Filing: 1956-11-09
•
Granted: 1957-10-01
•
Expires: 1976-11-09
Abstract
No abstract record available.
Inventors
- 👤 Truman G Stinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 14:27
CPC Classifications
E; E04; E04G; E04G1/00; E04G1/15; E04G1/151; E04G1/152
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US81406A
Cited
US510057A
Cited
CA468855A
Cited
US1498176A
Cited
US1594658A
Cited
US1682883A
Cited
US2089865A
Cited
US2178762A
Cited
US2296336A
Cited
US2479819A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-30 | 1961-04-01 | 1961-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-30 | 1965-04-01 | 1965-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-30 | 1969-04-01 | 1969-10-01 | $7700.00 | Window Closed / Lapsed |