US2699155A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable fluid heater
Assignee: Arthur A Olson & Co
•
Filing: 1951-04-18
•
Granted: 1955-01-11
•
Expires: 1971-04-18
Abstract
No abstract record available.
Inventors
- 👤 Arthur A Olson
- 👤 James H Hopkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:14
CPC Classifications
C; C10; C10C; C10C3/00; C10C3/10; C10C3/12; F; F22; F22B; F22B21/00; F22B21/02; F22B21/04; F22B21/08; F22B21/083; Y; Y10; Y10S; Y10S122/00; Y10S122/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US497432A
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US549569A
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US754360A
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US1094416A
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US1743112A
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US1672252A
Cited
US2322390A
Cited
US2323474A
Cited
US2420231A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-01-10 | 1958-07-12 | 1959-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-01-10 | 1962-07-12 | 1963-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-01-10 | 1966-07-12 | 1967-01-11 | $7700.00 | Window Closed / Lapsed |