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US2759752A
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Assignee: Individual
•
Filing: 1955-02-04
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Granted: 1956-08-21
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Expires: 1975-02-04
Abstract
No abstract record available.
Inventors
- 👤 Alva R Demings
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 16:16
CPC Classifications
E; E05; E05C; E05C1/00; E05C1/08; E05C1/12; E05C1/16; E05B; E05B65/00; E05B65/0007; E05B65/06; Y; Y10; Y10S; Y10S292/00; Y10S292/29; Y10T; Y10T292/00; Y10T292/08; Y10T292/096; Y10T292/0969; Y10T292/097; Y10T292/0994; Y10T292/62
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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Cited
US702696A
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US1054782A
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US1495371A
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US1504992A
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US2118722A
Cited
US2485042A
Cited
US2556361A
Cited
US2533582A
Cited
US2568273A
Cited
US2538398A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-08-21 | 1960-02-20 | 1960-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-08-21 | 1964-02-20 | 1964-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-08-21 | 1968-02-20 | 1968-08-21 | $7700.00 | Window Closed / Lapsed |