US2469929A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for coating articles
Assignee: American Optical Corp
•
Filing: 1943-09-24
•
Granted: 1949-05-10
•
Expires: 1963-09-24
Abstract
No abstract record available.
Inventors
- 👤 Osterberg Harold
- 👤 Roger E Matter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:18
CPC Classifications
C; C23; C23C; C23C14/00; C23C14/22; C23C14/24; C23C14/50; C23C14/52
Claims Analysis
Total Claims: 0
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US2351537A
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US2398382A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-05-09 | 1952-11-08 | 1953-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-05-09 | 1956-11-08 | 1957-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-05-09 | 1960-11-08 | 1961-05-10 | $7700.00 | Window Closed / Lapsed |