US2776089A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Blower
Assignee: Lau Blower Co
•
Filing: 1951-02-13
•
Granted: 1957-01-01
•
Expires: 1971-02-13
Abstract
No abstract record available.
Inventors
- 👤 John B Burrowes
- 👤 Karl M Ganger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:20
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/60; F04D29/64; F04D29/644; F04D29/646
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1064140A
Cited
US1713648A
Cited
US2008965A
Cited
US1971827A
Cited
US2073868A
Cited
US2108738A
Cited
US2223672A
Cited
US2427032A
Cited
US2390588A
Cited
US2385152A
Cited
US2529040A
Cited
US2408286A
Cited
US2479906A
Cited
US2492248A
Cited
US2453009A
Cited
US2525853A
Cited
US2650020A
Cited
US2590952A
Cited
US2573145A
Cited
US2644390A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-01-01 | 1960-07-02 | 1961-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-01 | 1964-07-02 | 1965-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-01 | 1968-07-02 | 1969-01-01 | $7700.00 | Window Closed / Lapsed |