US2642090A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diaphragm assembly and method of making same
Assignee: Niles Bement Pond Co
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Filing: 1946-11-16
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Granted: 1953-06-16
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Expires: 1966-11-16
Abstract
No abstract record available.
Inventors
- 👤 John M Barr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:41
CPC Classifications
F; F02; F02M; F02M59/00; F02M59/12; F02M59/14; F02M37/00; F02M37/04; F02M37/12; F02M2700/00; F02M2700/13; F02M2700/1317; F02M2700/1323; Y; Y02; Y02E; Y02E60/00; Y02E60/10; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49229; Y10T29/49231; Y10T29/49758; Y10T29/49826; Y10T29/49877; Y10T29/49885
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) | 1956-06-15 | 1956-12-15 | 1957-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-15 | 1960-12-15 | 1961-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-15 | 1964-12-15 | 1965-06-16 | $7700.00 | Window Closed / Lapsed |