US3474757A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple coating apparatus
Assignee: Individual
•
Filing: 1965-10-24
•
Granted: 1969-10-28
•
Expires: 1985-10-24
Abstract
No abstract record available.
Inventors
- 👤 Donald F Dreher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:31
CPC Classifications
D; D21; D21H; D21H23/00; D21H23/02; D21H23/22; D21H23/70; D21H23/72; D21H5/00; D21H5/0005; D21H5/005; D21H5/0052
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-27 | 1973-04-28 | 1973-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-27 | 1977-04-28 | 1977-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-27 | 1981-04-28 | 1981-10-28 | $7700.00 | Window Closed / Lapsed |