US2906906A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Indicator tubes
Assignee: Unisys Corp
•
Filing: 1958-05-22
•
Granted: 1959-09-29
•
Expires: 1978-05-22
Abstract
No abstract record available.
Inventors
- 👤 John H Mccauley
- 👤 John R Bethke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:16
CPC Classifications
H; H01; H01J; H01J17/00; H01J17/38; H01J17/48; H01J17/49; H01J2893/00; H01J2893/0069
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2142106A
Cited
US2769939A
Cited
US2606309A
Cited
US2790110A
Cited
US2717334A
Cited
US2756366A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-09-28 | 1963-03-30 | 1963-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-28 | 1967-03-30 | 1967-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-28 | 1971-03-30 | 1971-09-29 | $7700.00 | Window Closed / Lapsed |