US885998A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diaphragm and method of making the same.
Assignee: Individual
•
Filing: 1905-10-03
•
Granted: 1908-04-28
•
Expires: 1925-10-03
Abstract
No abstract record available.
Inventors
- 👤 Heinrich Hirtz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 01:36
CPC Classifications
C; C25; C25B; C25B13/00; C25B13/04; C25B13/05; H; H01; H01M; H01M8/00; H01M8/10; H01M8/1016; H01M8/1018; H01M8/102; H01M8/1023; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/50
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1911-04-28 | 1911-10-28 | 1912-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1915-04-28 | 1915-10-28 | 1916-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1919-04-28 | 1919-10-28 | 1920-04-28 | $7700.00 | Window Closed / Lapsed |