US2664852A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vapor coating apparatus
Assignee: National Research Corp
•
Filing: 1950-04-27
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Granted: 1954-01-05
•
Expires: 1970-04-27
Abstract
No abstract record available.
Inventors
- 👤 Jr Earl E Chadsey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:25
CPC Classifications
C; C23; C23C; C23C14/00; C23C14/22; C23C14/24; C23C14/246; C23C14/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2143723A
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US2153786A
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US2382432A
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US2363781A
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US2508500A
Cited
US2384578A
Cited
US2450853A
Cited
US2584660A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-01-04 | 1957-07-06 | 1958-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-01-04 | 1961-07-06 | 1962-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-01-04 | 1965-07-06 | 1966-01-05 | $7700.00 | Window Closed / Lapsed |