US953945A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum membrane-pump.
Assignee: Individual
•
Filing: 1908-08-03
•
Granted: 1910-04-05
•
Expires: 1928-08-03
Abstract
No abstract record available.
Inventors
- 👤 Martin Falk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:10
CPC Classifications
B; B60; B60T; B60T13/00; B60T13/10; B60T13/24; B60T13/46; B60T13/52; B60T13/563
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) | 1913-04-04 | 1913-10-04 | 1914-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1917-04-04 | 1917-10-04 | 1918-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1921-04-04 | 1921-10-04 | 1922-04-05 | $7700.00 | Window Closed / Lapsed |