US2481145A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: Individual
•
Filing: 1946-09-03
•
Granted: 1949-09-06
•
Expires: 1966-09-03
Abstract
No abstract record available.
Inventors
- 👤 Sidney E Nielsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:25
CPC Classifications
B; B62; B62B; B62B1/00; B62B1/02; B62B1/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US601008A
Cited
US909297A
Cited
US978344A
Cited
US1382566A
Cited
US1728081A
Cited
US2373279A
Cited
US2396325A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-09-05 | 1953-03-07 | 1953-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-09-05 | 1957-03-07 | 1957-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-09-05 | 1961-03-07 | 1961-09-06 | $7700.00 | Window Closed / Lapsed |