US2705459A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: WILLIAM M WILSON'S SONS Inc
•
Filing: 1950-11-09
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Granted: 1955-04-05
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Expires: 1970-11-09
Abstract
No abstract record available.
Inventors
- 👤 Dunning Leighton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:12
CPC Classifications
F; F01; F01C; F01C21/00; F01C21/08; F01C21/0809; F01C21/0818
Claims Analysis
Total Claims: 0
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US2498972A
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US2499763A
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US2541405A
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US2521595A
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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) | 1958-04-04 | 1958-10-04 | 1959-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-04-04 | 1962-10-04 | 1963-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-04-04 | 1966-10-04 | 1967-04-05 | $7700.00 | Window Closed / Lapsed |