US2916633A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photoelectric article detector
Assignee: Meredith Publishing Co
•
Filing: 1957-01-22
•
Granted: 1959-12-08
•
Expires: 1977-01-22
Abstract
No abstract record available.
Inventors
- 👤 Wilfred H Stone
- 👤 Donald W Watson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:27
CPC Classifications
G; G01; G01B; G01B11/00; G01B11/02; G01B11/04; G01B11/043
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2415167A
Cited
US2446046A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-12-07 | 1963-06-08 | 1963-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-07 | 1967-06-08 | 1967-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-07 | 1971-06-08 | 1971-12-08 | $7700.00 | Window Closed / Lapsed |