US1146019A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum-producing method and means.
Assignee: Individual
•
Filing: 1914-02-26
•
Granted: 1915-07-13
•
Expires: 1934-02-26
Abstract
No abstract record available.
Inventors
- 👤 August H Pfund
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:48
CPC Classifications
H; H01; H01J; H01J9/00; H01J9/38
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) | 1918-07-12 | 1919-01-11 | 1919-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1922-07-12 | 1923-01-11 | 1923-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1926-07-12 | 1927-01-11 | 1927-07-13 | $7700.00 | Window Closed / Lapsed |