US3507204A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic film processor
Assignee: Northrop Grumman Guidance and Electronics Co Inc
•
Filing: 1967-03-17
•
Granted: 1970-04-21
•
Expires: 1987-03-17
Abstract
No abstract record available.
Inventors
- 👤 Robert Joseph Kohler Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 02:09
CPC Classifications
G; G03; G03D; G03D5/00; G03D5/04; G03D3/00; G03D3/08; G03D3/13; G03D3/132
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1377887A
Cited
US1821129A
Cited
US2376032A
Cited
US3077155A
Cited
US3294004A
Cited
US3345928A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-04-20 | 1973-10-20 | 1974-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-04-20 | 1977-10-20 | 1978-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-04-20 | 1981-10-20 | 1982-04-21 | $7700.00 | Window Closed / Lapsed |