US1000615A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air-pump.
Assignee: HERBERT L HILDRETH
•
Filing: 1910-01-28
•
Granted: 1911-08-15
•
Expires: 1930-01-28
Abstract
No abstract record available.
Inventors
- 👤 Charles W Mcgary
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 00:41
CPC Classifications
F; F04; F04C; F04C18/00; F04C18/08; F04C18/12; F04C18/14; F04C18/16
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) | 1914-08-14 | 1915-02-13 | 1915-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1918-08-14 | 1919-02-13 | 1919-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1922-08-14 | 1923-02-13 | 1923-08-15 | $7700.00 | Window Closed / Lapsed |