US3515470A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control information recording and sensing methods and apparatus
Assignee: Bell and Howell Co
•
Filing: 1967-11-20
•
Granted: 1970-06-02
•
Expires: 1987-11-20
Abstract
No abstract record available.
Inventors
- 👤 Lewis B Browder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:31
CPC Classifications
G; G03; G03B; G03B27/00; G03B27/02; G03B27/04; G03B27/08; G03B17/00; G03B17/24; G03B17/245; G03B21/00; G03B21/14; G03B21/32; G03B21/50; G03B2217/00; G03B2217/24; G03B2217/242; G03B2217/243; G03B2217/246
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) | 1973-06-01 | 1973-12-01 | 1974-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-06-01 | 1977-12-01 | 1978-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-06-01 | 1981-12-01 | 1982-06-02 | $7700.00 | Window Closed / Lapsed |