Patent US3277779A successfully refreshed from Google Patents.
US3277779A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Information selector device and projection system
Assignee: Individual
•
Filing: 1964-05-11
•
Granted: 1966-10-11
•
Expires: 1984-05-11
Abstract
No abstract record available.
Inventors
- 👤 John G Doran
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:32
CPC Classifications
G; G02; G02B; G02B21/00; G02B21/0004; G02B21/0016
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2078368A
Cited
US2175116A
Cited
US2650518A
Cited
US2676515A
Cited
US2942344A
Cited
US3192627A
Cited
US3173746A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-10 | 1970-04-11 | 1970-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-10 | 1974-04-11 | 1974-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-10 | 1978-04-11 | 1978-10-11 | $7700.00 | Window Closed / Lapsed |