US2561147A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Comb foundation
Assignee: The A I Root Co
•
Filing: 1947-05-29
•
Granted: 1951-07-17
•
Expires: 1967-05-29
Abstract
No abstract record available.
Inventors
- 👤 Edgar F Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:53
CPC Classifications
B; B29; B29C; B29C67/00; B29C67/24; B29C67/241; A; A01; A01K; A01K47/00; A01K47/04; B29C43/00; B29C43/22; B29C43/24; B29C59/00; B29C59/02; B29C59/04; B29K; B29K2023/00; B29K2023/04; B29K2023/06; B29K2091/00; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24149; Y10T428/31504; Y10T428/31801; Y10T428/31855
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US32258A
Cited
US234226A
Cited
US481578A
Cited
US979765A
Cited
US1282645A
Cited
US1583605A
Cited
US1561623A
Cited
US2331231A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-07-16 | 1955-01-15 | 1955-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-16 | 1959-01-15 | 1959-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-16 | 1963-01-15 | 1963-07-17 | $7700.00 | Window Closed / Lapsed |