Patent US3429544A successfully refreshed from Google Patents.
US3429544A
Expired / Lapsed
US
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Air table
Assignee: Ealing Corp
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Filing: 1967-06-15
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Granted: 1969-02-25
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Expires: 1987-06-15
Abstract
No abstract record available.
Inventors
- 👤 Thomas Walley Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:16
CPC Classifications
F; F16; F16C; F16C32/00; F16C32/06; F16C29/00; F16C29/02; F16C29/025; F16C32/0603; G; G09; G09B; G09B23/00; G09B23/06; F16C2212/00; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24149; Y10T428/24273
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-02-25 | 1972-08-26 | 1973-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-25 | 1976-08-26 | 1977-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-25 | 1980-08-26 | 1981-02-25 | $7700.00 | Window Closed / Lapsed |