Patent US2590699A successfully refreshed from Google Patents.
US2590699A
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Assignee: Individual
•
Filing: 1947-10-20
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Granted: 1952-03-25
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Expires: 1967-10-20
Abstract
No abstract record available.
Inventors
- 👤 Eric H Heyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:50
CPC Classifications
G; G03; G03D; G03D3/00; G03D3/08; G03D3/13; G03D3/14; G03D3/135
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US14621A
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US163207A
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DE432622C
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US2048182A
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US1891225A
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US1968166A
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GB410859A
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US2095733A
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US2153552A
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US2338422A
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US2291627A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-03-25 | 1955-09-24 | 1956-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-03-25 | 1959-09-24 | 1960-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-03-25 | 1963-09-24 | 1964-03-25 | $7700.00 | Window Closed / Lapsed |