US2835372A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Insulating machine
Assignee: Individual
•
Filing: 1953-08-20
•
Granted: 1958-05-20
•
Expires: 1973-08-20
Abstract
No abstract record available.
Inventors
- 👤 John M Biddison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:52
CPC Classifications
H; H02; H02K; H02K15/00; H02K15/10; Y; Y10; Y10T; Y10T29/00; Y10T29/51; Y10T29/5192; Y10T29/53; Y10T29/5313; Y10T29/53143; Y10T29/53152
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1721037A
Cited
US1980170A
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US1948006A
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US1993754A
Cited
US1933225A
Cited
US2194125A
Cited
US2370828A
Cited
US2340291A
Cited
US2607394A
Cited
US2613823A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-05-19 | 1961-11-18 | 1962-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-19 | 1965-11-18 | 1966-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-19 | 1969-11-18 | 1970-05-20 | $7700.00 | Window Closed / Lapsed |