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US2551179A
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Assignee: R W CRAMER Co Inc
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Filing: 1948-02-18
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Granted: 1951-05-01
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Expires: 1968-02-18
Abstract
No abstract record available.
Inventors
- 👤 Spencer Hugh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 03:10
CPC Classifications
G; G04; G04F; G04F8/00; G04F8/006; G06; G06M; G06M1/00; G06M1/04; G06M1/06; G06M1/062
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1458509A
Cited
US1557721A
Cited
US1703491A
Cited
US2398015A
Cited
US1181306A
Cited
US2233368A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-04-30 | 1954-10-30 | 1955-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-30 | 1958-10-30 | 1959-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-30 | 1962-10-30 | 1963-05-01 | $7700.00 | Window Closed / Lapsed |