Patent US723042A successfully refreshed from Google Patents.
US723042A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve for syringes, atomizers, &c.
Assignee: HARDMAN RUBBER Co
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Filing: 1901-03-19
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Granted: 1903-03-17
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Expires: 1921-03-19
Abstract
No abstract record available.
Inventors
- 👤 Silas Schwerin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:26
CPC Classifications
F; F04; F04B; F04B43/00; F04B43/08
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) | 1906-03-16 | 1906-09-15 | 1907-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1910-03-16 | 1910-09-15 | 1911-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1914-03-16 | 1914-09-15 | 1915-03-17 | $7700.00 | Window Closed / Lapsed |