US2728845A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic printer
Assignee: Individual
•
Filing: 1951-10-09
•
Granted: 1955-12-27
•
Expires: 1971-10-09
Abstract
No abstract record available.
Inventors
- 👤 Rowland S Potter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:08
CPC Classifications
G; G03; G03B; G03B27/00; G03B27/02; G03B27/14; G03B27/16
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1784171A
Cited
GB298523A
Cited
US2009223A
Cited
US2213382A
Cited
US2346988A
Cited
US2394966A
Cited
US2392502A
Cited
US2524657A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-12-26 | 1959-06-27 | 1959-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-12-26 | 1963-06-27 | 1963-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-12-26 | 1967-06-27 | 1967-12-27 | $7700.00 | Window Closed / Lapsed |