Patent US2704646A successfully refreshed from Google Patents.
US2704646A
Expired / Lapsed
US
⏱️ 0.0 years remaining
vogel
Assignee: —
•
Filing: —
•
Granted: 1955-03-22
•
Expires: 1972-03-22
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:07
CPC Classifications
G; G05; G05D; G05D1/00; G05D1/20; G05D1/22; G05D1/221; G05D1/227
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2211191A
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US2208549A
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US2398421A
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US2271252A
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US2377575A
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US2382765A
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US2437256A
Cited
US2420553A
Cited
US2516796A
Cited
US2535046A
Cited
GB644179A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-03-21 | 1958-09-20 | 1959-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-03-21 | 1962-09-20 | 1963-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-03-21 | 1966-09-20 | 1967-03-22 | $7700.00 | Window Closed / Lapsed |