US3547644A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic drafting film with a polyethylene terephthalate base containing silica
Assignee: EIDP Inc
•
Filing: 1966-01-03
•
Granted: 1970-12-15
•
Expires: 1986-01-03
Abstract
No abstract record available.
Inventors
- 👤 Jerome Albert Moede
- 👤 Delmar Francis Schumacher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:07
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/76; G03C1/95; Y; Y10; Y10S; Y10S430/00; Y10S430/151
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3113208A
Cited
US3340062A
Cited
US3220842A
Cited
US3201506A
Cited
FR1347696A
Cited
US3353958A
Cited
US3382206A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-12-14 | 1974-06-15 | 1974-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-14 | 1978-06-15 | 1978-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-14 | 1982-06-15 | 1982-12-15 | $7700.00 | Window Closed / Lapsed |