Patent US2329044A successfully refreshed from Google Patents.
US2329044A
Expired / Lapsed
US
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Dual cylinder
Assignee: Individual
•
Filing: 1941-08-13
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Granted: 1943-09-07
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Expires: 1961-08-13
Abstract
No abstract record available.
Inventors
- 👤 Hugo C Gollmer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:00
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/12; F16K31/122; F16K31/1225; F15; F15B; F15B11/00; F15B11/02; F15B11/028; F15B11/036; F15B3/00; F15B2211/00; F15B2211/30; F15B2211/305; F15B2211/30505; F15B2211/70; F15B2211/705; F15B2211/7051; F15B2211/7055; F15B2211/775
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) | 1946-09-06 | 1947-03-08 | 1947-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1950-09-06 | 1951-03-08 | 1951-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1954-09-06 | 1955-03-08 | 1955-09-07 | $7700.00 | Window Closed / Lapsed |