Patent US2442240A successfully refreshed from Google Patents.
US2442240A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photoelectric device
Assignee: RAYMOND T MOLONEY
•
Filing: 1942-02-20
•
Granted: 1948-05-25
•
Expires: 1962-02-20
Abstract
No abstract record available.
Inventors
- 👤 Donald E Hooker
- 👤 Frank G Nicolaus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:18
CPC Classifications
F; F41; F41G; F41G3/00; F41G3/26; F41G3/2616; F41G3/2694; F41G3/2622; F41G3/2627; G; G03; G03B; G03B15/00; G03B15/02
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2139210A
Cited
US1848795A
Cited
US1011593A
Cited
US1207411A
Cited
GB191306682A
Cited
US1471031A
Cited
GB179599A
Cited
GB220992A
Cited
US1598433A
Cited
US1886939A
Cited
US1929589A
Cited
US1930137A
Cited
US1819954A
Cited
US2052960A
Cited
FR722578A
Cited
US1880105A
Cited
US2042174A
Cited
US2227007A
Cited
US2089901A
Cited
US2241964A
Cited
US2166947A
Cited
US2227037A
Cited
US2228551A
Cited
US2269794A
Cited
US2335257A
Cited
US2347657A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-05-25 | 1951-11-24 | 1952-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-05-25 | 1955-11-24 | 1956-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-05-25 | 1959-11-24 | 1960-05-25 | $7700.00 | Window Closed / Lapsed |