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Patent US2636659A successfully refreshed from Google Patents.
US2636659A
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Assignee: HELEN SALISBURY NIXON
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Filing: 1949-04-15
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Granted: 1953-04-28
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Expires: 1969-04-15
Abstract
No abstract record available.
Inventors
- 👤 Raymond R Salisbury
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:50
CPC Classifications
E; E06; E06C; E06C1/00; E06C1/02; E06C1/14; E06C1/16; E06C1/20; E06C1/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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GB593874A
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US2466838A
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US2610875A
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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) | 1956-04-27 | 1956-10-27 | 1957-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-04-27 | 1960-10-27 | 1961-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-04-27 | 1964-10-27 | 1965-04-28 | $7700.00 | Window Closed / Lapsed |