Patent US3051841A successfully refreshed from Google Patents.
US3051841A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Printing and photography
Assignee: CROSFIELD J F Ltd
•
Filing: 1957-11-25
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Granted: 1962-08-28
•
Expires: 1977-11-25
Abstract
No abstract record available.
Inventors
- 👤 Crosfield John Fothergill
- 👤 Allen Gordon Stanley James
- 👤 Brimelow Peter
- 👤 Price Peter Ralph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:20
CPC Classifications
G; G08; G08C; G08C21/00; Y; Y10; Y10S; Y10S209/00; Y10S209/903
Claims Analysis
Total Claims: 0
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US2848107A
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US2859653A
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US2907888A
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US2850644A
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US2964642A
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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) | 1965-08-27 | 1966-02-26 | 1966-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-08-27 | 1970-02-26 | 1970-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-08-27 | 1974-02-26 | 1974-08-28 | $7700.00 | Window Closed / Lapsed |