Patent US2743867A successfully refreshed from Google Patents.
US2743867A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gervais
Assignee: —
•
Filing: —
•
Granted: 1956-05-01
•
Expires: 1973-05-01
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:50
CPC Classifications
G; G06; G06G; G06G3/00; G06G3/08; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19219; Y10T74/19293; Y10T74/19353
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1112459A
Cited
US644579A
Cited
GB191005698A
Cited
US1229514A
Cited
US2145843A
Cited
US2024115A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-01 | 1959-10-31 | 1960-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-01 | 1963-10-31 | 1964-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-01 | 1967-10-31 | 1968-05-01 | $7700.00 | Window Closed / Lapsed |