The name is absent



ON THE ANALYSIS OF LIBRARY GROWTH

87


TABLE III

U.S. Invention Patents Issued

1790-1966

Date Number

Date

Number

Date

Number

Date Number

Date Number

1790

3

1830

544

1870

12137

1910

35141

1950

43040

1791

33

1831

573

1871

11659

1911

32856

1951

44326

1792

11

1832

474

1872

12180

1912

36198

1952

43616

1793

20

1833

586

1873

11616

1913

33917

1953

40468

1794

22

1834

630

1874

12230

1914

39892

1954

33809

1795

12

1835

752

1875

13291

1915

43118

1955

30432

1796

44

1836

702

1876

14169

1916

43892

1956

46817

1797

51

1837

426

1877

12920

1917

40935

1957

42744

1798

28

1838

514

1878

12345

1918

38452

1958

48330

1799

44

1839

404

1879

12125

1919

36797

1959

52408

1800

41

1840

458

1880

12903

1920

37060

1960

47170

1801

44

1841

490

1881

15500

1921

37798

1961

48368

1802

65

1842

488

1882

18091

1922

38369

1962

55691

1803

97

1843

493

1883

21162

1923

к 38616

1963

45679

1804

84

1844

478

1884

19118

1924

42574

1964

47376

1805

57

1845

473

1885

23285

1925

46432

1965

62857

1806

63

1846

566

1886

21767

1926

44733

1966

68406

1807

99

1847

495

1887

20403

1927

41717

1808

158

1848

583

1888

19551

1928

42357

1809

203

1849

984

1889

23324

1929

45267

1810

223

1850

883

1890

25313

1930

45226

1811

215

1851

752

1891

22312

1931

51756

1812

238

1852

885

1892

22647

1932

53458

1813

181

1853

844

1893

22750

1933

48774

1814

210

1854

1755

1894

19855

1934

44420

1815

173

1855

1881

1895

20856

1935

40618

1816

206

1856

2302

1896

21822

1936

39782

1817

174

1857

2674

1897

22067

1937

37683

1818

222

1858

3455

1898

20377

1938

38061

1819

156

1859

4160

1899

23278

1939

43073

1820

155

1860

4357

1900

24644

1940

42238

1821

168

1861

3020

1901

25546

1941

41109

1822

200

1862

3214

1902

27119

1942

38449

1823

173

1863

3773

1903

31029

1943

31054

1824

228

1864

4630

1904

30258

1944

28053

1825

304

1865

6088

1905

29775

1945

25695

1826

323

1866

8863

1906

31170

1946

21803

1827

331

1867

12277

1907

35859

1947

20139

1828

368

1868

12526

1908

32735

1948

23963

1829

447

1869

12931

1909

36561

1949

35131



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