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US2727235A
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US
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Assignee: Individual
•
Filing: 1952-05-14
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Granted: 1955-12-20
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Expires: 1972-05-14
Abstract
No abstract record available.
Inventors
- 👤 Cameron John Griffiths
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 01:21
CPC Classifications
B; B25; B25C; B25C1/00; B25C1/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US620426A
Cited
US1222129A
Cited
US1262486A
Cited
US1409419A
Cited
AT140641B
Cited
GB588189A
Cited
US2587944A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-12-19 | 1959-06-20 | 1959-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-12-19 | 1963-06-20 | 1963-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-12-19 | 1967-06-20 | 1967-12-20 | $7700.00 | Window Closed / Lapsed |