US2435997A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for vapor coating of large surfaces
Assignee: American Optical Corp
•
Filing: 1943-11-06
•
Granted: 1948-02-17
•
Expires: 1963-11-06
Abstract
No abstract record available.
Inventors
- 👤 Alva H Bennett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:29
CPC Classifications
C; C23; C23C; C23C14/00; C23C14/22; C23C14/24
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US998579A
Cited
US1439743A
Cited
US1256599A
Cited
US1817311A
Cited
US2074281A
Cited
FR805066A
Cited
US2153363A
Cited
US2239642A
Cited
US2267296A
Cited
US2317173A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-02-16 | 1951-08-18 | 1952-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-02-16 | 1955-08-18 | 1956-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-02-16 | 1959-08-18 | 1960-02-17 | $7700.00 | Window Closed / Lapsed |