Patent US3817225A successfully refreshed from Google Patents.
US2690246A
Expired / Lapsed
US
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Assignee: General Controls Co
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Filing: 1949-06-29
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Granted: 1954-09-28
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Expires: 1969-06-29
Abstract
No abstract record available.
Inventors
- 👤 Waldo J Kelleigh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:44
CPC Classifications
F; F16; F16D; F16D13/00; F16D13/22; F16D13/24; F16D13/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US981345A
Cited
US1491267A
Cited
US1777829A
Cited
GB403745A
Cited
CH237460A
Cited
US2481028A
Cited
US2416083A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-09-27 | 1958-03-29 | 1958-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-09-27 | 1962-03-29 | 1962-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-09-27 | 1966-03-29 | 1966-09-28 | $7700.00 | Window Closed / Lapsed |