US3473068A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Digit tube with the characters secured only at one end
Assignee: US Philips Corp
•
Filing: 1967-10-19
•
Granted: 1969-10-14
•
Expires: 1987-10-19
Abstract
No abstract record available.
Inventors
- 👤 Adrianus Anthonius Ma Hendriks
- 👤 Carel Peter Klopping
- 👤 Franciscus Adrianus Van Hout
- 👤 Petrus Wilhelmus Sanders
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:42
CPC Classifications
H; H01; H01J; H01J17/00; H01J17/38; H01J17/48
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2578370A
Cited
US2618760A
Cited
US2756366A
Cited
US2991388A
Cited
US2991387A
Cited
US3136911A
Cited
US3318649A
Cited
US3358176A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-13 | 1973-04-14 | 1973-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-13 | 1977-04-14 | 1977-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-13 | 1981-04-14 | 1981-10-14 | $7700.00 | Window Closed / Lapsed |