US2724988A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microphotograph carrier
Assignee: Northern Engraving & Manufacturing Co
•
Filing: 1952-05-03
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Granted: 1955-11-29
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Expires: 1972-05-03
Abstract
No abstract record available.
Inventors
- 👤 Peters Edward Otto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:06
CPC Classifications
G; G03; G03B; G03B21/00; G03B21/10; G03B21/11; G03B21/115; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18568; Y10T74/18576; Y10T74/18656; Y10T74/19; Y10T74/19642; Y10T74/19698; Y10T74/19702; Y10T74/19744; Y10T74/19781; Y10T74/19786
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB190313467A
Cited
US1530173A
Cited
US2292825A
Cited
US2260551A
Cited
US2341378A
Cited
US2369980A
Cited
US2441168A
Cited
US2511646A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-11-28 | 1959-05-30 | 1959-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-11-28 | 1963-05-30 | 1963-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-11-28 | 1967-05-30 | 1967-11-29 | $7700.00 | Window Closed / Lapsed |