US2451699A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Support
Assignee: Individual
•
Filing: 1945-09-28
•
Granted: 1948-10-19
•
Expires: 1965-09-28
Abstract
No abstract record available.
Inventors
- 👤 Stanley E Twaroski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:09
CPC Classifications
H; H02; H02G; H02G3/00; H02G3/30; F; F16; F16L; F16L3/00; F16L3/22; F16L3/223; Y; Y10; Y10S; Y10S55/00; Y10S55/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US770278A
Cited
US1129782A
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US1125064A
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US1429776A
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US1804416A
Cited
DE605213C
Cited
US2291430A
Cited
US2394240A
Cited
GB555302A
Cited
US2356318A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-10-19 | 1952-04-19 | 1952-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-10-19 | 1956-04-19 | 1956-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-10-19 | 1960-04-19 | 1960-10-19 | $7700.00 | Window Closed / Lapsed |