Patent US2199035A successfully refreshed from Google Patents.
US2199035A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Counterbalance
Assignee: Individual
•
Filing: 1938-12-17
•
Granted: 1940-04-30
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Expires: 1958-12-17
Abstract
No abstract record available.
Inventors
- 👤 Walter J Allen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:24
CPC Classifications
F; F03; F03D; F03D80/00; F03D7/00; F03D7/02; F03D7/0296; F05; F05B; F05B2260/00; F05B2260/96; Y; Y02; Y02E; Y02E10/00; Y02E10/70; Y02E10/72
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) | 1943-04-30 | 1943-10-30 | 1944-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-04-30 | 1947-10-30 | 1948-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-04-30 | 1951-10-30 | 1952-04-30 | $7700.00 | Window Closed / Lapsed |