US2795994A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microfilm reader
Assignee: Viewlex Inc
•
Filing: 1953-11-18
•
Granted: 1957-06-18
•
Expires: 1973-11-18
Abstract
No abstract record available.
Inventors
- 👤 Halahan John
- 👤 Theodore F Aronson
- 👤 Floyd A Lyon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 09:53
CPC Classifications
G; G03; G03B; G03B21/00; G03B21/10; G03B21/11; G03B21/111
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2181696A
Cited
US2204709A
Cited
US2404189A
Cited
US2437898A
Cited
CH257153A
Cited
US2692529A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-06-17 | 1960-12-17 | 1961-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-06-17 | 1964-12-17 | 1965-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-06-17 | 1968-12-17 | 1969-06-18 | $7700.00 | Window Closed / Lapsed |