US2475809A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas developing machine for photosensitive sheets having automatic gas delivery
Assignee: PARAGON REVOLUTE Corp
•
Filing: 1945-07-30
•
Granted: 1949-07-12
•
Expires: 1965-07-30
Abstract
No abstract record available.
Inventors
- 👤 Harry H Sullivan
- 👤 Warren L Sullivan
- 👤 Frederick G Wilde
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:19
CPC Classifications
G; G03; G03D; G03D7/00
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-07-11 | 1953-01-10 | 1953-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-07-11 | 1957-01-10 | 1957-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-07-11 | 1961-01-10 | 1961-07-12 | $7700.00 | Window Closed / Lapsed |