US3472205A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Developing device for an electrostatic recording apparatus
Assignee: Toshiba Corp
•
Filing: 1966-06-21
•
Granted: 1969-10-14
•
Expires: 1986-06-21
Abstract
No abstract record available.
Inventors
- 👤 Takeshi Tsuchiya
- 👤 Tetsuo Takahashi
- 👤 Kiyoshi Yamamoto
- 👤 Akito Yanai
- 👤 Mikio Takiura
- 👤 Toshio Kano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:14
CPC Classifications
H; H01; H01J; H01J31/00; H01J31/02; H01J31/06; H01J31/065
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2967082A
Cited
US3160091A
Cited
US3283069A
Cited
US3152012A
Cited
US3140199A
Cited
US3133834A
Cited
US3213309A
Cited
US3308473A
Cited
US3367307A
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 |