US2515950A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ventilating apparatus
Assignee: Bendix Aviation Corp
•
Filing: 1946-09-13
•
Granted: 1950-07-18
•
Expires: 1966-09-13
Abstract
No abstract record available.
Inventors
- 👤 Glen H Dingman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:55
CPC Classifications
H; H02; H02K; H02K5/00; H02K5/04; H02K5/10; H02K2205/00; H02K2205/09
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1420411A
Cited
US1385995A
Cited
US1723412A
Cited
US1730237A
Cited
US1960259A
Cited
US2151180A
Cited
US2150859A
Cited
US2279961A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-07-17 | 1954-01-16 | 1954-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-07-17 | 1958-01-16 | 1958-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-07-17 | 1962-01-16 | 1962-07-18 | $7700.00 | Window Closed / Lapsed |