US3380830A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat developable diazo photocopying sheet
Assignee: Bauchet and Cie Ets
•
Filing: 1964-09-21
•
Granted: 1968-04-30
•
Expires: 1984-09-21
Abstract
No abstract record available.
Inventors
- 👤 Andre Schaeffer
- 👤 Bernard Clauss
- 👤 Michel Laquerriere
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:02
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/52; G03C1/60
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2318352A
Cited
GB849739A
Cited
GB815005A
Cited
US3076707A
Cited
US3284201A
Cited
FR1325692A
Cited
US3199982A
Cited
US3316092A
Cited
US3166422A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-04-30 | 1971-10-30 | 1972-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-30 | 1975-10-30 | 1976-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-30 | 1979-10-30 | 1980-04-30 | $7700.00 | Window Closed / Lapsed |