US1239869A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas-compressor.
Assignee: Individual
•
Filing: 1915-11-30
•
Granted: 1917-09-11
•
Expires: 1935-11-30
Abstract
No abstract record available.
Inventors
- 👤 Louis Block
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:25
CPC Classifications
F; F04; F04B; F04B39/00; F04B39/12; F04B39/128; Y; Y10; Y10S; Y10S277/00; Y10S277/909; Y10S277/928
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) | 1920-09-10 | 1921-03-12 | 1921-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1924-09-10 | 1925-03-12 | 1925-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1928-09-10 | 1929-03-12 | 1929-09-11 | $7700.00 | Window Closed / Lapsed |