US2829025A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High speed apparatus for recording intelligence
Assignee: Individual
•
Filing: 1952-04-18
•
Granted: 1958-04-01
•
Expires: 1972-04-18
Abstract
No abstract record available.
Inventors
- 👤 John E Clemens
- 👤 Ben B Johnstone
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:26
CPC Classifications
H; H01; H01J; H01J31/00; H01J31/02; H01J31/06; H01J31/065; Y; Y10; Y10S; Y10S101/00; Y10S101/37
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2144337A
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US2545123A
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US2716826A
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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) | 1961-03-31 | 1961-09-30 | 1962-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-31 | 1965-09-30 | 1966-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-31 | 1969-09-30 | 1970-04-01 | $7700.00 | Window Closed / Lapsed |