US2816431A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: Individual
•
Filing: 1957-01-04
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Granted: 1957-12-17
•
Expires: 1977-01-04
Abstract
No abstract record available.
Inventors
- 👤 William J Harney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 07:28
CPC Classifications
E; E05; E05C; E05C17/00; E05C17/02; E05C17/04; E05C17/36; E05C17/365; Y; Y10; Y10T; Y10T292/00; Y10T292/28; Y10T292/283; Y10T70/00; Y10T70/50; Y10T70/5093; Y10T70/5155; Y10T70/5164
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US482227A
Cited
US1325538A
Cited
US1476446A
Cited
AT16975B
Cited
GB191221844A
Cited
US2454794A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-12-16 | 1961-06-17 | 1961-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-16 | 1965-06-17 | 1965-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-16 | 1969-06-17 | 1969-12-17 | $7700.00 | Window Closed / Lapsed |