US2882516A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Record sensing system
Assignee: Northern Trust Co
•
Filing: 1952-10-29
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Granted: 1959-04-14
•
Expires: 1972-10-29
Abstract
No abstract record available.
Inventors
- 👤 Neergaard Leif Eric De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:28
CPC Classifications
B; B23; B23Q; B23Q35/00; B23Q35/04; B23Q35/08; B23Q35/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1809070A
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US1941618A
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US2080100A
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US2188650A
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US2351595A
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US2307965A
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US2590091A
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US2537770A
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US2615990A
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US2641656A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-04-13 | 1962-10-13 | 1963-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-13 | 1966-10-13 | 1967-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-13 | 1970-10-13 | 1971-04-14 | $7700.00 | Window Closed / Lapsed |