US2988415A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machine system recorder
Assignee: Sheffield Corp
•
Filing: 1958-03-25
•
Granted: 1961-06-13
•
Expires: 1978-03-25
Abstract
No abstract record available.
Inventors
- 👤 Norman L Jeglum
- 👤 Harold P Reiling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:21
CPC Classifications
G; G07; G07C; G07C3/00; G07C3/08; G07C3/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US203689A
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US2858182A
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US845637A
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GB190901267A
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US1519473A
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US2309956A
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US2389828A
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GB562461A
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US2517316A
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US2628277A
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US2776867A
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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) | 1964-06-12 | 1964-12-12 | 1965-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-12 | 1968-12-12 | 1969-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-12 | 1972-12-12 | 1973-06-13 | $7700.00 | Window Closed / Lapsed |