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US2981861A
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US
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Identification, p.p.i. code sorting and printing tube
Assignee: Individual
•
Filing: 1955-08-08
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Granted: 1961-04-25
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Expires: 1975-08-08
Abstract
No abstract record available.
Inventors
- 👤 Willis R Dawirs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:19
CPC Classifications
H; H01; H01J; H01J31/00; H01J31/08; H01J31/10; H01J31/12; H01J31/16; G; G01; G01S; G01S7/00; G01S7/02; G01S7/04; G01S7/06; G01S7/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2698399A
Cited
US2735956A
Cited
US2803769A
Cited
US2718611A
Cited
US2728873A
Cited
US2769116A
Cited
US2790103A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-04-24 | 1964-10-24 | 1965-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-24 | 1968-10-24 | 1969-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-24 | 1972-10-24 | 1973-04-25 | $7700.00 | Window Closed / Lapsed |