US2852727A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mechanical memory
Assignee: PHOTOGRAPHIC ANALYSIS Inc
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Filing: 1956-08-20
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Granted: 1958-09-16
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Expires: 1976-08-20
Abstract
No abstract record available.
Inventors
- 👤 John S Barnett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:58
CPC Classifications
G; G04; G04C; G04C21/00; G04C21/16; G04C21/28; G05; G05B; G05B19/00; G05B19/02; G05B19/04; G05B19/0405; Y; Y10; Y10T; Y10T74/00; Y10T74/21; Y10T74/2101; Y10T74/2102; Y10T74/2105
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-15 | 1962-03-17 | 1962-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-15 | 1966-03-17 | 1966-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-15 | 1970-03-17 | 1970-09-16 | $7700.00 | Window Closed / Lapsed |