US2895506A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal foil diaphragm
Assignee: Turco Products Inc
•
Filing: 1954-10-11
•
Granted: 1959-07-21
•
Expires: 1974-10-11
Abstract
No abstract record available.
Inventors
- 👤 William P Langsfeld
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 06:55
CPC Classifications
C; C23; C23F; C23F1/00; C23F1/02; F; F16; F16J; F16J3/00; F16J3/04; F16J3/047
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1546706A
Cited
US967010A
Cited
US1754289A
Cited
US1886803A
Cited
US1867767A
Cited
US2145937A
Cited
DE701878C
Cited
US2307066A
Cited
US2408038A
Cited
US2522401A
Cited
US2521648A
Cited
US2442791A
Cited
US2602731A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-07-20 | 1963-01-19 | 1963-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-07-20 | 1967-01-19 | 1967-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-07-20 | 1971-01-19 | 1971-07-21 | $7700.00 | Window Closed / Lapsed |