Patent US1563155A successfully refreshed from Google Patents.
US2970221A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photoelectric metering apparatus
Assignee: Challenge Cook Bros Inc
•
Filing: 1958-09-30
•
Granted: 1961-01-31
•
Expires: 1978-09-30
Abstract
No abstract record available.
Inventors
- 👤 Robert E Jackson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:03
CPC Classifications
B; B28; B28C; B28C7/00; B28C7/04; B28C7/12; B28C7/122; G; G01; G01F; G01F13/00
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-01-31 | 1964-08-01 | 1965-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-31 | 1968-08-01 | 1969-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-31 | 1972-08-01 | 1973-01-31 | $7700.00 | Window Closed / Lapsed |