US2487561A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic copying machine
Assignee: Photostat Corp
•
Filing: 1942-10-06
•
Granted: 1949-11-08
•
Expires: 1962-10-06
Abstract
No abstract record available.
Inventors
- 👤 Landrock Paul
- 👤 Arthur W Caps
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:31
CPC Classifications
G; G03; G03B; G03B27/00; G03B27/32; G03B27/46
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) | 1952-11-07 | 1953-05-09 | 1953-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-11-07 | 1957-05-09 | 1957-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-11-07 | 1961-05-09 | 1961-11-08 | $7700.00 | Window Closed / Lapsed |