US3404766A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable spacebar mechanism for automatically operated proportional escapement printer
Assignee: International Business Machines Corp
•
Filing: 1966-09-19
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Granted: 1968-10-08
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Expires: 1986-09-19
Abstract
No abstract record available.
Inventors
- 👤 William H Castle
- 👤 John E Jones
- 👤 Robert A Rahenkamp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 03:32
CPC Classifications
B; B41; B41J; B41J19/00; B41J19/18; B41J19/34; B41J19/58
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2067821A
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US2390413A
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US2555734A
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US2700447A
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US2879876A
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US2919002A
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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) | 1971-10-08 | 1972-04-08 | 1972-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-08 | 1976-04-08 | 1976-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-08 | 1980-04-08 | 1980-10-08 | $7700.00 | Window Closed / Lapsed |