US2428681A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for automatically processing film
Assignee: Individual
•
Filing: 1943-10-28
•
Granted: 1947-10-07
•
Expires: 1963-10-28
Abstract
No abstract record available.
Inventors
- 👤 Verneur E Pratt
- 👤 George F Gray
- 👤 Daniel E Reed
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 00:31
CPC Classifications
G; G03; G03D; G03D13/00; G03D13/006; G03D3/00; G03D3/02; G03D3/06; G03D3/08; G03D3/13; G03D3/132
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1900825A
Cited
FR844158A
Cited
DE642376C
Cited
US1570809A
Cited
FR23508E
Cited
US1460206A
Cited
US1656522A
Cited
US1679096A
Cited
US1758326A
Cited
US1809830A
Cited
FR37706E
Cited
US1912427A
Cited
US1987387A
Cited
US1854335A
Cited
US2036442A
Cited
US2207127A
Cited
US1991249A
Cited
US1974353A
Cited
US1956072A
Cited
US2096232A
Cited
US2158817A
Cited
US2191850A
Cited
FR834867A
Cited
US2186927A
Cited
US2263380A
Cited
US2223767A
Cited
US2376207A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-10-06 | 1951-04-07 | 1951-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-10-06 | 1955-04-07 | 1955-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-10-06 | 1959-04-07 | 1959-10-07 | $7700.00 | Window Closed / Lapsed |