Patent US2495652A successfully refreshed from Google Patents.
US1979208A
Expired / Lapsed
US
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Recording device
Assignee: International Business Machines Corp
•
Filing: 1930-05-28
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Granted: 1934-10-30
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Expires: 1950-05-28
Abstract
No abstract record available.
Inventors
- 👤 Carl M F Friden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:20
CPC Classifications
G; G07; G07C; G07C1/00; G07C1/02; G07C1/04; G07C1/06; Y; Y10; Y10S; Y10S101/00; Y10S101/30; Y10S200/00; Y10S200/21
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1937-10-29 | 1938-04-30 | 1938-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1941-10-29 | 1942-04-30 | 1942-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1945-10-29 | 1946-04-30 | 1946-10-30 | $7700.00 | Window Closed / Lapsed |