Patent US2336946A successfully refreshed from Google Patents.
US2336946A
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Method and apparatus for coating envelopes for electric lamps
Assignee: Westinghouse Electric Corp
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Filing: 1941-12-10
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Granted: 1943-12-14
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Expires: 1961-12-10
Abstract
No abstract record available.
Inventors
- 👤 John W Marden
- 👤 Meister George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:25
CPC Classifications
B; B05; B05B; B05B3/00; B05B3/02; B05B3/10; B05B3/1007; B05B3/1021; B05B13/00; B05B13/06; B05B13/0627; B05B13/0636; H; H01; H01J; H01J9/00; H01J9/20; H01J9/22; H01J9/221; Y; Y10; Y10S; Y10S118/00; Y10S118/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1946-12-13 | 1947-06-14 | 1947-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1950-12-13 | 1951-06-14 | 1951-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1954-12-13 | 1955-06-14 | 1955-12-14 | $7700.00 | Window Closed / Lapsed |