US2764461A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Box means
Assignee: Individual
•
Filing: 1953-11-19
•
Granted: 1956-09-25
•
Expires: 1973-11-19
Abstract
No abstract record available.
Inventors
- 👤 Henry M Montgomery
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:22
CPC Classifications
A; A47; A47B; A47B43/00; A47B43/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US478049A
Cited
GB189706470A
Cited
US1109409A
Cited
US1174474A
Cited
US1327458A
Cited
US1560493A
Cited
US1809829A
Cited
GB444371A
Cited
US2539963A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-09-25 | 1960-03-26 | 1960-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-09-25 | 1964-03-26 | 1964-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-09-25 | 1968-03-26 | 1968-09-25 | $7700.00 | Window Closed / Lapsed |