US3188138A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chair interlinking unit
Assignee: HAMPDEN SPECIALTY PRODUCTS CORP
•
Filing: 1964-05-04
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Granted: 1965-06-08
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Expires: 1984-05-04
Abstract
No abstract record available.
Inventors
- 👤 Samuel D Lockshin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:11
CPC Classifications
A; A47; A47C; A47C1/00; A47C1/12; A47C1/124; Y; Y10; Y10T; Y10T24/00; Y10T24/34; Y10T24/3427; Y10T24/3439; Y10T24/344; Y10T24/3444
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1307240A
Cited
US712898A
Cited
US831245A
Cited
US1934396A
Cited
US2181317A
Cited
US2637081A
Cited
US2675063A
Cited
US2821762A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-06-07 | 1968-12-07 | 1969-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-07 | 1972-12-07 | 1973-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-07 | 1976-12-07 | 1977-06-08 | $7700.00 | Window Closed / Lapsed |