US2345549A
Expired / Lapsed
US
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Assignee: Allen B du Mont Laboratories Inc
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Filing: 1943-10-16
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Granted: 1944-03-28
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Expires: 1963-10-16
Abstract
No abstract record available.
Inventors
- 👤 Peter S Christaldi
- 👤 Steadman Albert
- 👤 David T Wilber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:22
CPC Classifications
C; C09; C09K; C09K11/00; C09K11/08; C09K11/57; C09K11/572; C09K11/574; C09D; C09D5/00; C09D5/22; G; G03; G03C; G03C1/00; G03C1/705; Y; Y10; Y10S; Y10S430/00; Y10S430/143
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) | 1947-03-28 | 1947-09-27 | 1948-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1951-03-28 | 1951-09-27 | 1952-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1955-03-28 | 1955-09-27 | 1956-03-28 | $7700.00 | Window Closed / Lapsed |