US3457006A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Projection station
Assignee: Bell and Howell Co
•
Filing: 1965-12-03
•
Granted: 1969-07-22
•
Expires: 1985-12-03
Abstract
No abstract record available.
Inventors
- 👤 Richard P Brown
- 👤 Joseph H Lancor Jr
- 👤 Arthur Rak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 19:50
CPC Classifications
G; G03; G03B; G03B21/00; G03B21/10
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
NL293579A
Cited
US1670629A
Cited
US2066158A
Cited
US1987710A
Cited
US2438022A
Cited
FR924517A
Cited
US3262358A
Cited
US3311017A
Cited
US3277781A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-07-21 | 1973-01-20 | 1973-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-21 | 1977-01-20 | 1977-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-21 | 1981-01-20 | 1981-07-22 | $7700.00 | Window Closed / Lapsed |