US2551597A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recording apparatus for high-speed
Assignee: —
•
Filing: —
•
Granted: 1951-05-08
•
Expires: 1968-05-08
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:25
CPC Classifications
G; G03; G03B; G03B39/00; G03B39/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1406973A
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Cited
US2184953A
Cited
US2102708A
Cited
US2238379A
Cited
US2304901A
Cited
US2348401A
Cited
US2403730A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-05-07 | 1954-11-06 | 1955-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-07 | 1958-11-06 | 1959-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-07 | 1962-11-06 | 1963-05-08 | $7700.00 | Window Closed / Lapsed |