US2833069A
Expired / Lapsed
US
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Assignee: LAWRENCE C HOWE
•
Filing: 1954-06-21
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Granted: 1958-05-06
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Expires: 1974-06-21
Abstract
No abstract record available.
Inventors
- 👤 Cairns Thomas Christie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 05:16
CPC Classifications
G; G09; G09F; G09F13/00; G09F13/04; G09F13/0413
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US688595A
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US1792635A
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US1758714A
Cited
GB430673A
Cited
US2029221A
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US2581727A
Cited
US2602252A
Cited
US2626473A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-05-05 | 1961-11-04 | 1962-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-05 | 1965-11-04 | 1966-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-05 | 1969-11-04 | 1970-05-06 | $7700.00 | Window Closed / Lapsed |