US1273728A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air-compressor pump.
Assignee: Individual
•
Filing: 1917-10-18
•
Granted: 1918-07-23
•
Expires: 1937-10-18
Abstract
No abstract record available.
Inventors
- 👤 George Burd
- 👤 Charles Burd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:55
CPC Classifications
F; F04; F04B; F04B33/00; F04B33/005; F15; F15B; F15B11/00; F15B11/02; F15B11/028; F15B11/036; F15B11/0365
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) | 1921-07-22 | 1922-01-21 | 1922-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1925-07-22 | 1926-01-21 | 1926-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1929-07-22 | 1930-01-21 | 1930-07-23 | $7700.00 | Window Closed / Lapsed |